Medium severity · published May 26, 2026
CVE-2026-43934
e107: Broken Access Control in e107 comment edit allows cross-user comment modification
6.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
E1
e107 · e107inc
< 2.3.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43934
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43934
github.com
https://github.com/e107inc/e107/commit/23961a8f
github.com
https://github.com/e107inc/e107/security/advisories/GHSA-5w63-63rh-99q6
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