CVE-2026-77145

7.1 highEPSS 0.4%

High (7.1). EPSS 0.4% chance of exploitation in the next 30 days.

The permission check for the frontend management update flow verified a different event than the one the request went on to modify. A user with frontend event management access could therefore modify events belonging to other organizers.

Severity

CVSS 4.0

7.1 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-08-25
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-026

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