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TI-2026-74375 Aliases CVE-2026-55572

SQL injection in e107 alt_auth plugin via login username

Priority MEDIUM 49CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
SQL injection
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

e107 CMS versions before 2.3.7 are affected. The bundled alt_auth plugin's otherdb and e107db authentication backends insert the submitted login username directly into SQL queries (CWE-89). An unauthenticated remote attacker can inject SQL when alt_auth is installed and either backend uses a live external database connection, reading or modifying data available to the configured database account. Query errors can disclose the generated query.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00515 44th percentileScored 2026-11-07
Fix Fixed e107 (e107inc): 2.3.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
e107ince107before 2.3.72.3.7Patch availableCNA
  • e107 Vendore107inc Affected before 2.3.7 Fixed in 2.3.7 Patch available CNA

Remediation

Upgrade e107 to version 2.3.7, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA e107 (e107inc) Fixed in 2.3.7

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-55572
  2. 2026-10-29 CISA SSVC decision points changed

References

Other 3

  • TI-2026-74376 Unsafe deserialization in e107 installer enables remote code execution CVSS 3.1CRITICAL 9.8
  • TI-2026-31992 e107: Host Header Injection in e107 password reset enables phishing CVSS 3.1HIGH 8.1
  • TI-2026-41663 e107 Second-Order Code Execution via eval()-Based Deserialization in e_array::unserialize() CVSS 4.0HIGH 7.7
  • TI-2026-36251 e107: Command Injection via shell expansion in ImageMagick resize destination path CVSS 3.1HIGH 7.1
  • TI-2026-34276 e107: CSRF in comment.php moderation endpoints via token-optional validation in session_handler::check() CVSS 3.1MEDIUM 6.5
  • TI-2026-31991 e107: Broken Access Control in e107 comment edit allows cross-user comment modification CVSS 3.1MEDIUM 6.5
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences