CVE-2026-100524 Cotonti CVE debrief

Who should care

Administrators and security teams responsible for Cotonti installations should assess exposure and apply patches or mitigations. They should also monitor for suspicious activity related to the extensions manager and review compensating controls for exposed systems. Additionally, they should verify Cotonti installations for exposure to cross-site request forgery attacks and track exceptions, retest remediated assets, and close the item only after evidence

Why it matters

CVE-2026-100524 is a cross-site request forgery vulnerability in Cotonti through 1.0.0 that allows attackers to perform state-changing actions without anti-CSRF token validation. Administrators and security teams should prioritize verifying Cotonti installations for exposure and applying patches or mitigations.

• Verify Cotonti installations for exposure to cross-site request forgery attacks
• Apply patches or mitigations to prevent state-changing actions without anti-CSRF token validation
• Monitor for suspicious activity related to extensions manager

Technical summary

Cotonti through 1.0.0 contains a cross-site request forgery vulnerability in the extensions manager that allows attackers to perform state-changing actions without anti-CSRF token validation. This vulnerability can be exploited through crafted links or embedded images, tricking authenticated administrators into visiting a malicious page. The vulnerability has a CVSS score of 5.3 and a severity rating of MEDIUM, indicating a moderate level of risk. To mitigate this vulnerability, administrators should prioritize verifying Cotonti installations for exposure and applying patches or mitigations.

Defensive priority

Administrators and security teams should prioritize verifying Cotonti installations for exposure and applying patches or mitigations.

Recommended defensive actions

• Verify Cotonti installations for exposure to cross-site request forgery attacks
• Apply patches or mitigations to prevent state-changing actions without anti-CSRF token validation
• Monitor for suspicious activity related to extensions manager
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on a cross-site request forgery vulnerability in Cotonti through 1.0.0. However, the corpus does not establish versions beyond 1.0.0, exploitation, impact, or remediation, which require verification from the supplied official sources. Further review of Cotonti's extension manager and anti-CSRF token validation is necessary to understand the full scope of this vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.