Vulnerability · Published Sep 4, 2026 · Assigned by GitHub_M

CVE-2026-53756Emlog Blind SQL Injection via Authentication Cookie

Medium 4.9

In plain English

A medium-severity SQL injection in emlog from emlog. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.4%top 62.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in User_Model::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie validation path, where $username is extracted from the cookie and passed unfiltered into SQL — guarded only by an HMAC signature that requires AUTH_KEY to forge. This issue has been patched in version 2.6.16.

Affected products (as reported)

Vendor	Product	Versions
emlog	emlog	< 2.6.16

Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg x_refsource_CONFIRM
https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4 x_refsource_MISC
https://github.com/emlog/emlog/releases/tag/pro-2.6.16 x_refsource_MISC