What’s Vulnerable › Vulnerabilities

CVE-2026-43934: e107: Broken Access Control in e107 comment edit allows cross-user comment modification

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-26 · updated 2026-07-24
• Weakness: CWE-284

Description

e107 is a content management system (CMS). Prior to 2.3.4, a Broken Access Control vulnerability exists in the application, allowing an unauthorized authenticated user to edit comments posted by others. This stems from inadequate server-side access control validation, where the application depends only on a predictable identifier in the request to determine which comment to edit, without confirming the requesting user’s ownership of the comment. This vulnerability is fixed in 2.3.4.

Affected products

• e107inc e107: before 2.3.4

References

• https://github.com/e107inc/e107/commit/23961a8f
• https://github.com/e107inc/e107/security/advisories/GHSA-5w63-63rh-99q6
• https://github.com/e107inc/e107/security/advisories/GHSA-5w63-63rh-99q6

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