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CVE-2026-77144

Broken Access Control in extension "Events 2" (events2)

HIGH
7.1
CVSS Score
Published: August 25, 2026 at 09:00 AM UTC
Updated: September 28, 2026 at 11:10 PM UTC
1 product affected across 1 vendorEVENTS2

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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

The frontend management plugin attributed a newly created event to the submitting user's organizer record only when the request supplied no organizer of its own. The accompanying permission check confirmed only that the submitting user held any organizer role. A user with frontend event management access could therefore create an event that is attributed to another organizer.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

EVENTS2· TYPO3composer
60%
v < 8.6.310.0.0 ≤ v < 10.2.129.0.0 ≤ v < 9.4.210.0.09.0.0
Affected range stops below 10.2.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.6.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.4.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://typo3.org/security/advisory/typo3-ext-sa-2026-026

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHTYPO3
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-915

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