Vulnerability · Published Aug 25, 2026 · Assigned by TYPO3
CVE-2026-77145Broken Access Control in extension "Events 2" (events2)
High 7.1
In plain English
A high-severity authorization bypass via user-controlled key in Extension "Events 2" from TYPO3. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.4%top 71.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TYPO3 | Extension "Events 2" | 10.0.0 – before 10.2.129.0.0 – before 9.4.20 – before 8.6.3 |
Weakness: CWE-639 · Vector: 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
References
- https://typo3.org/security/advisory/typo3-ext-sa-2026-026 vendor-advisory