Cybersource incident
Cybersource CAS Sign-Up Service Disruption
Cybersource experienced a notice incident on July 24, 2026 affecting Corporate Site and Portals and 1 more component, lasting 33d 2h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jul 24, 2026, 07:50 PM UTC
Cybersource have observed a recurrence of the previously reported issue impacting Cybersource Access Control Server (CAS) merchant sign up. Our teams are actively investigating and implementing mitigation measures to restore normal service. We're going to take down Sandbox signup page temporarily on cybersource & visaacceptance - https://developer.visaacceptance.com/hello-world/sandbox.html Please contact us if you need one. reference support article : https://support.visaacceptance.com/knowledgebase/knowledgearticle/?code=000002108 Impact:Merchant sign-up services are temporarily unavailable Reported Start Time: 24 July 2026 Next Update: Within 60 minutes We regret any inconvenience this may cause for our customers. We will provide regular updates until the issue is mitigated. Please do not hesitate to contact the Cybersource support team if you have any questions or concerns. Cybersource Support Center Incident #:INC26538085
- investigating Jul 24, 2026, 09:02 PM UTC
Cybersource have observed a recurrence of the previously reported issue impacting Cybersource CAS Merchant Sign Up Services. Our teams are actively investigating and implementing mitigation measures to restore normal service. Currently Sandbox signup page is temporarily unavailable on cybersource & visaacceptance - https://developer.visaacceptance.com/hello-world/sandbox.html Please contact us if you need one. reference support article : https://support.visaacceptance.com/knowledgebase/knowledgearticle/?code=000002108 Impact:Merchant sign-up services are temporarily unavailable Reported Start Time: 24 July 2026 Next Update: As current status changes. We regret any inconvenience this may cause for our customers. We will provide regular updates until the issue is mitigated. Please do not hesitate to contact the Cybersource support team if you have any questions or concerns. Cybersource Support Center Incident #:INC26538085
- investigating Aug 13, 2026, 09:24 AM UTC
We appreciate your patience as we continue working to mitigate the issue impacting CyberSource CAS Merchant Sign Up Services. Our teams are actively investigating the issue and implementing measures to restore normal service. We will provide further updates as they become available. Currently Sandbox signup page is temporarily unavailable on Cybersource & Visa Acceptance - https://developer.visaacceptance.com/hello-world/sandbox.html Please contact us if you need one. reference support article: https://support.visaacceptance.com/knowledgebase/knowledgearticle/?code=000002108 Impact: Merchant sign-up services are temporarily unavailable. Reported Start Time: 24 July 2026 Next Update: As current status changes We regret any inconvenience this may cause for our customers. We will provide regular updates until the issue is mitigated. Please do not hesitate to contact the Cybersource support team if you have any questions or concerns. Cybersource Support Center Incident #: INC26538085
- resolved Aug 26, 2026, 10:45 PM UTC
The issue affecting CyberSource CAS Merchant Sign Up Services in our Sandbox/Testing Environment has now been fully resolved. Cybersource is conducting an internal review of the events to mitigate future occurrences. Reported Start Time: 24 July 2026 Reported End Time: 26 August 2026 Impact: Users are now able to use the Sandbox Sign Up pages on CyberSource and Visa Acceptance as normal. Next Update: No further updates, issue resolved. Please do not hesitate to contact the Cybersource support team if you have any questions or concerns. Cybersource Support Center Incident #: INC26538085
- postmortem Sep 16, 2026, 11:15 PM UTC
Clients and merchants can access the Post Incident Report with their Support Center login credentials at the following [link](https://support.visaacceptance.com/knowledgebase/Knowledgearticle/?code=KA-11990).