Vulnerability · Published Oct 14, 2026 · Assigned by GitHub_M

CVE-2026-55572e107: SQL injection in alt_auth plugin (otherdb / e107db backends) via login username

Critical 10.0

In plain English

A critical-severity SQL injection in e107 from e107inc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)0.5%top 55.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

e107 is a content management system (CMS). Prior to 2.3.7, the bundled alt_auth plugin's otherdb and e107db authentication backends interpolate the submitted login username directly into SQL in e107_plugins/alt_auth/otherdb_auth.php and e107_plugins/alt_auth/e107db_auth.php. The login() methods execute those strings with PDO::query() before effective sanitization, so an unauthenticated user can inject SQL when alt_auth is installed and either backend is configured with a live external database connection. The injection can expose or modify data available to the configured database account, and query failures can additionally disclose the generated query through the debug-message path. This issue is fixed in version 2.3.7.

Affected products (as reported)

Vendor	Product	Versions
e107inc	e107	< 2.3.7

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

References

https://github.com/e107inc/e107/security/advisories/GHSA-5f75-c25x-59wx x_refsource_CONFIRM
https://github.com/e107inc/e107/commit/120bd4bdbe18c8690c60a007ad6716e52e6ee965 x_refsource_MISC
https://github.com/e107inc/e107/releases/tag/v2.3.7 x_refsource_MISC