SB2026082609 - Multiple vulnerabilities in Events 2 extension for TYPO3

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Main Vulnerability Database SB2026082609

SB2026082609 - Multiple vulnerabilities in Events 2 extension for TYPO3

Published: August 26, 2026

Security Bulletin ID SB2026082609
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improperly Controlled Modification of Dynamically-Determined Object Attributes (CVE-ID: CVE-2026-77144)

CWE-ID: CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes

CVSSv4: 7.1 [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]


The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper control of dynamically assigned object attributes. A remote user can create an event that is attributed to another organizer.


2) Authorization bypass through user-controlled key (CVE-ID: CVE-2026-77145)

CWE-ID: CWE-639 - Authorization Bypass Through User-Controlled Key

CVSSv4: 7.1 [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]


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper permission check for the frontend management update flow. A remote user can modify events belonging to other organizers.


Remediation

Install update from vendor's website.

References