Vulnerability details
CVE-2026-77145
TYPO3 Extension "Events 2"
Broken Access Control in extension "Events 2" (events2)
CVSS 4.0
7.1High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (TYPO3) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| TYPO3 | Extension "Events 2" | v < 8.6.3 | CVEProject cvelistV5 (CNA) |
| TYPO3 | Extension "Events 2" | 10.0.0 ≤ v < 10.2.12 | CVEProject cvelistV5 (CNA) |
| TYPO3 | Extension "Events 2" | 9.0.0 ≤ v < 9.4.2 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://typo3.org/security/advisory/typo3-ext-sa-2026-026 vendor-advisory
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Details
- Published
- 2026-08-25
- Last updated
- 2026-08-27
- State
- Published
- Assigner (CNA)
- TYPO3
Exploit prediction (EPSS)
0.35%
Probability of exploitation in 30 days
28.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-639Authorization Bypass Through User-Controlled Key