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Resolved: service disruption caused by PHP vulnerabilities on 21 October 2026

NL: Dit is de laatste update over de verstoring van 21-10-2026. De verstoring is opgelost en alle applicaties zijn sinds 21:42 weer volledig beschikbaar. Hiermee sluiten we dit incident af.

Wat er gebeurde Op 21-10-2026 werden twee kwetsbaarheden in PHP bekendgemaakt: CVE-2026-109618 en CVE-2026-109619. Een deel van onze applicaties draait op PHP. Op dat moment was nog niet duidelijk welke impact dit op onze omgeving kon hebben. Ons securityteam is direct een analyse gestart om de risico's en mogelijke maatregelen in kaart te brengen.

Waarom we de applicaties offline haalden Omstreeks 14:00 uur hebben we besloten alle PHP-applicaties tijdelijk offline te halen. Dit was een bewuste voorzorgsmaatregel, mede op advies van het Nationaal Cyber Security Centrum (NCSC). In zo'n situatie kiezen we voor veiligheid boven beschikbaarheid. Daardoor waren Remindo, Skillsly, Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC en NHAPlaza tijdens de verstoring niet bereikbaar.

Tijdlijn

  • 8:11 Kwetsbaarheden bekendgemaakt, analyse gestart
  • 13:52 Besluit om alle PHP-applicaties offline te halen
  • 19:00 Beveiligingsupdates beschikbaar
  • 19:00 tot 21:30 Updates doorgevoerd en getest
  • 21:30 Applicaties gefaseerd weer online
  • 21:42 Alle applicaties weer volledig beschikbaar

Moet u iets doen? Nee, er is geen actie van u nodig. Onze excuses voor de overlast. Heeft u vragen of hulp nodig? Neem dan contact op met Customer Support via de gebruikelijke route.

EN: This is the final update on the disruption of 21 October 2026. The issue has been resolved and all applications have been fully available again since 21:42 CEST. We are now closing this incident.

What happened On 21 October 2026, two vulnerabilities in PHP were disclosed: CVE-2026-109618 and CVE-2026-109619. Some of our applications run on PHP. At that point it was not yet clear what impact this could have on our environment. Our security team immediately started an analysis to assess the risks and identify possible mitigations.

Why we took the applications offline At around 14:00 CEST we decided to take all PHP applications temporarily offline. This was a deliberate precautionary measure, taken partly on the advice of the Dutch National Cyber Security Centre (NCSC). In a situation like this, we put security ahead of availability. As a result, Remindo, Skillsly, Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC en NHAPlaza were unavailable during the disruption.

Timeline (CEST)

  • 08:11 Vulnerabilities disclosed, analysis started
  • 13:52 Decision to take all PHP applications offline
  • 19:00 Security updates available
  • 19:00 to 21:30 Updates applied and tested
  • 21:30 Applications gradually brought back online
  • 21:42 All applications fully available again

Do you need to take any action? No, no action is required on your part. We apologise for the inconvenience. If you have any questions or need help, please contact Customer Support through the usual channels.

Remindo

Remindo cluster 1 (Tribeca)
60 days ago
99.507% uptime
Today
Remindo cluster 2 (NoHo)
60 days ago
99.511% uptime
Today
RemindoManager cluster 1 (Tribeca)
60 days ago
99.506% uptime
Today
RemindoManager cluster 2 (NoHo)
60 days ago
99.51% uptime
Today
RemindoHub
60 days ago
99.509% uptime
Today
RemindoConnect
60 days ago
99.514% uptime
Today

Skillsly

Skillsly
60 days ago
99.484% uptime
Today

Sowiso

Sowiso Application - Cloud
60 days ago
99.793% uptime
Today
Sowiso Application - OMPT
60 days ago
99.794% uptime
Today
Sowiso Application - Cappelen Damm - coSinus
60 days ago
99.837% uptime
Today
Sowiso Application - Cappelen Damm - Akademisk
60 days ago
99.832% uptime
Today
Sowiso Application - Bloomsbury Maths Engine
60 days ago
99.789% uptime
Today
Sowiso Application - Cirrus
60 days ago
99.793% uptime
Today
Sowiso Application - Liber
60 days ago
99.779% uptime
Today
Sowiso Application - Learn-flix
60 days ago
99.776% uptime
Today
Sowiso Application - Europa-Lehrmittel
60 days ago
99.782% uptime
Today
Sowiso Application - UvA
60 days ago
99.789% uptime
Today
Sowiso Application - MyStark
60 days ago
99.797% uptime
Today
Sowiso Application - Diddit
60 days ago
99.865% uptime
Today
Sowiso Application - Max Online
60 days ago
99.871% uptime
Today
Sowiso Application - Sanoma Pro
60 days ago
99.874% uptime
Today
Sowiso Application - Sanoma Utbildning
60 days ago
99.876% uptime
Today

Incidents in the past 7 days

View full history
  1. Oct 23

    No incidents on this day.

  2. Oct 22

    1. Resolved: service disruption caused by PHP vulnerabilities on 21 October 2026

      NL: Dit is de laatste update over de verstoring van 21-10-2026. De verstoring is opgelost en alle applicaties zijn sinds 21:42 weer volledig beschikbaar. Hiermee sluiten we dit incident af.

      Wat er gebeurde Op 21-10-2026 werden twee kwetsbaarheden in PHP bekendgemaakt: CVE-2026-109618 en CVE-2026-109619. Een deel van onze applicaties draait op PHP. Op dat moment was nog niet duidelijk welke impact dit op onze omgeving kon hebben. Ons securityteam is direct een analyse gestart om de risico's en mogelijke maatregelen in kaart te brengen.

      Waarom we de applicaties offline haalden Omstreeks 14:00 uur hebben we besloten alle PHP-applicaties tijdelijk offline te halen. Dit was een bewuste voorzorgsmaatregel, mede op advies van het Nationaal Cyber Security Centrum (NCSC). In zo'n situatie kiezen we voor veiligheid boven beschikbaarheid. Daardoor waren Remindo, Skillsly, Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC en NHAPlaza tijdens de verstoring niet bereikbaar.

      Tijdlijn

      • 8:11 Kwetsbaarheden bekendgemaakt, analyse gestart
      • 13:52 Besluit om alle PHP-applicaties offline te halen
      • 19:00 Beveiligingsupdates beschikbaar
      • 19:00 tot 21:30 Updates doorgevoerd en getest
      • 21:30 Applicaties gefaseerd weer online
      • 21:42 Alle applicaties weer volledig beschikbaar

      Moet u iets doen? Nee, er is geen actie van u nodig. Onze excuses voor de overlast. Heeft u vragen of hulp nodig? Neem dan contact op met Customer Support via de gebruikelijke route.

      EN: This is the final update on the disruption of 21 October 2026. The issue has been resolved and all applications have been fully available again since 21:42 CEST. We are now closing this incident.

      What happened On 21 October 2026, two vulnerabilities in PHP were disclosed: CVE-2026-109618 and CVE-2026-109619. Some of our applications run on PHP. At that point it was not yet clear what impact this could have on our environment. Our security team immediately started an analysis to assess the risks and identify possible mitigations.

      Why we took the applications offline At around 14:00 CEST we decided to take all PHP applications temporarily offline. This was a deliberate precautionary measure, taken partly on the advice of the Dutch National Cyber Security Centre (NCSC). In a situation like this, we put security ahead of availability. As a result, Remindo, Skillsly, Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC en NHAPlaza were unavailable during the disruption.

      Timeline (CEST)

      • 08:11 Vulnerabilities disclosed, analysis started
      • 13:52 Decision to take all PHP applications offline
      • 19:00 Security updates available
      • 19:00 to 21:30 Updates applied and tested
      • 21:30 Applications gradually brought back online
      • 21:42 All applications fully available again

      Do you need to take any action? No, no action is required on your part. We apologise for the inconvenience. If you have any questions or need help, please contact Customer Support through the usual channels.

  3. Oct 21

    1. Final update: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability - Solved

      NL: De PHP-kwetsbaarheden waardoor we eerder vandaag onze applicaties uit voorzorg offline hebben gehaald, zijn inmiddels opgelost. Na het uitkomen van de benodigde patches hebben onze teams de nieuwe PHP-versie geïmplementeerd en onze applicaties hierop zorgvuldig getest. Deze tests zijn succesvol afgerond, waardoor alle applicaties weer live zijn en zoals gebruikelijk kunnen worden gebruikt.

      EN: The PHP vulnerabilities that led us to take our applications offline as a precaution earlier today have now been resolved. Following the release of the necessary patches, our teams implemented the new PHP version and thoroughly tested our applications on it. These tests have been completed successfully, and all applications are now back online and can be used as normal.

    2. Update 8: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability - Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC & NHAPlaza online

      NL: Ook Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC en NHAPlaza zijn terug online en weer volledig beschikbaar.

      EN: Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC and NHAPlaza are also back online and fully accessible.

    3. Update 7: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability - Skillsly online

      NL: Ook Skillsly is inmiddels weer online!

      EN: Skillsly is back online as well!

    4. Skillsly is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    5. Update 6: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability - Remindo online

      NL: Goed nieuws, Remindo is inmiddels weer online en dus volledig bereikbaar. Het online brengen van de andere applicaties hopen we ook snel te realiseren.

      EN: Good news, Remindo is now back online and fully accessible. We hope to bring the other applications back online soon as well.

    6. RemindoManager cluster 1 (Tribeca) is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    7. Remindo cluster 1 (Tribeca) is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    8. RemindoConnect is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    9. RemindoManager cluster 2 (NoHo) is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    10. Remindo cluster 2 (NoHo) is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    11. RemindoHub is currently accessible again. We will continue to monitor this critically in the coming period and remain alert for possible incidents.

    12. Update 5: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability

      NL: We hebben inmiddels goede vooruitgang geboekt. Onze teams testen op dit moment onze applicaties op de nieuwe PHP-versie. Als dit succesvol blijkt, kunnen we de volgende stappen zetten.

      EN: We are now making good progress. Our teams are currently testing our applications on the new PHP version. If this proves to be successful, we can move on to the next steps.

    13. Update 4: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability

      NL: We werken nog steeds aan het oplossen van de PHP-kwetsbaarheden. Op dit moment kunnen we helaas nog geen tijdsindicatie geven voor een definitieve oplossing. Zodra we meer informatie hebben, zullen we deze uiteraard delen.

      EN: We are still working on resolving the PHP vulnerabilities. Unfortunately, we are not yet able to provide a timeline for a permanent solution. As soon as we have more information, we will share it on this page.

    14. Update 3: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability

      NL: De PHP patches die de betreffende problemen oplossen zijn inmiddels uitgegeven. Dit stelt ons in staat om te werken aan een definitieve oplossing die ervoor zorgt dat we uiteindelijk onze applicaties weer online kunnen brengen. We doen ons uiterste best dit zo snel mogelijk te realiseren, maar willen hier zorgvuldig mee omgaan en zijn hiervoor ook afhankelijk van externe partijen. We kunnen daarom op dit moment helaas nog niet inschatten wanneer dit definitief opgelost is. We zullen op deze pagina updates blijven delen.

      EN: The PHP patches that resolve the issues in question have now been released. This allows us to work on a permanent solution that will ultimately enable us to bring our applications back online. We are doing everything we can to achieve this as quickly as possible, but we want to handle it with due care, and we are also dependent on third parties. Unfortunately, this means we are not yet able to estimate when the issue will be fully resolved. We will continue to share updates on this page.

    15. We are encountering a problem in the accessibility of Skillsly. We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    16. We are encountering a problem in the accessibility of RemindoManager cluster 2 (NoHo). We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    17. We are encountering a problem in the accessibility of Remindo cluster 2 (NoHo). We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    18. We are encountering a problem in the accessibility of RemindoConnect. We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    19. We are encountering a problem in the accessibility of RemindoHub. We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    20. We are encountering a problem in the accessibility of RemindoManager cluster 1 (Tribeca). We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    21. We are encountering a problem in the accessibility of Remindo cluster 1 (Tribeca). We are acting with the highest priority to investigate and resolve this. When we have updates, we will let you know on this page ASAP.

    22. Update 2: PHP CVE-2026-109618 & CVE-2026-109619 vulnerability

      NL: Ter bescherming van onze klanten en hun gegevens halen we de betreffende applicaties tijdelijk offline. Ze blijven offline totdat de kwetsbaarheid is verholpen en we hebben vastgesteld dat de omgeving veilig is. We verwachten na het doorvoeren van de patch onze applicaties langzaam weer online te kunnen brengen.

      EN: To protect our customers and their data, we are temporarily taking the affected applications offline. They will remain offline until the vulnerability has been resolved and we have confirmed that the environment is secure. Once the patch has been applied, we expect to gradually bring our applications back online.

    23. Update on PHP CVE-2026-109618 & CVE-2026-109619 vulnerability

      NL: Ons team is nog steeds bezig de risico's in kaart te brengen en mogelijke maatregelen te identificeren om deze risico's te beperken. We hebben momenteel alle upload functionaliteiten geblokkeerd. De getroffen applicaties zijn: Remindo, Skillsly, Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC en NHAPlaza. Later vandaag komt er een patch beschikbaar. Wij verwachten dat de getroffen applicaties de betreffende patch aan het begin van de avond hebben geïmplementeerd.

      EN: Our team is still working to assess the risks and identify possible measures to mitigate them. We have currently blocked all upload functionalities. The affected applications are: Remindo, Skillsly, Sowiso, RemindoBooking, RemindoContent, Competent, RemindoEVC, and NHAPlaza. A patch will become available later today. We expect the affected applications to have implemented the relevant patch early in the evening.

    24. PHP CVE-2026-109618 & CVE-2026-109619 vulnerability

      NL: Gisteravond is bekend geworden dat er twee ernstige kwetsbaarheden in PHP zijn gevonden (bekend als CVE-2026-109618 en CVE-2026-109619). De technische details over de kwetsbaarheden zijn nog niet officieel bekend gemaakt. Op dit moment inventariseren we waar de risico's zitten en ondernemen wij alle acties die we kunnen om de risico's te mitigeren.

      EN: Last night it was published that two serious vulnerabilities have been discovered in PHP (identified as CVE-2026-109618 and CVE-2026-109619). Technical details regarding these vulnerabilities have not yet been officially released. We are currently assessing what the risks are and are taking all possible measures to mitigate them.

  4. Oct 20

    No incidents on this day.

  5. Oct 19

    No incidents on this day.

  6. Oct 18

    No incidents on this day.

  7. Oct 17

    No incidents on this day.