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TI-2026-71358 Aliases CVE-2026-109573GHSA-2v8j-hf72-c5w9

SQL injection in phpMyFAQ autocomplete search endpoint

Priority HIGH 75CWE-89Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

phpMyFAQ before 4.1.9 contains an SQL injection flaw (CWE-89) in PdoMysql::escape(), which escapes single quotes with backslashes that are treated as plain characters when MySQL or MariaDB runs in NO_BACKSLASH_ESCAPES mode. An unauthenticated remote attacker can send a Unicode right single quotation mark in the search parameter of api/autocomplete, which is normalized to an ASCII quote, to read credentials and configuration secrets, modify records, or drop tables.

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

Description from the CNA

phpMyFAQ before 4.1.9 contains an SQL injection vulnerability in PdoMysql::escape(), which escapes single quotes with backslashes that are treated literally when MySQL or MariaDB runs in NO_BACKSLASH_ESCAPES mode. Unauthenticated attackers can send a Unicode right single quotation mark in the search parameter of api/autocomplete, which is normalized to an ASCII quote, to read credentials and configuration secrets, modify records, or drop tables.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00338 27th percentileScored 2026-11-07
Fix Fixed phpMyFAQ (thorsten): 4.1.9, 4.2.0-beta

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
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
thorstenphpMyFAQbefore 4.1.9; 4.2.0-alpha to before 4.2.0-beta4.1.9, 4.2.0-betaPatch availableCNA
  • phpMyFAQ Vendorthorsten Affected before 4.1.9; 4.2.0-alpha to before 4.2.0-beta Fixed in 4.1.9, 4.2.0-beta Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:*——thorsten
  • cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:* Versions — — ·thorsten

Remediation

Upgrade phpMyFAQ to version 4.1.9 or later, or to 4.2.0-beta or later for the 4.2.0-alpha line.

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

  • Fix · CNA phpMyFAQ (thorsten) Fixed in 4.1.9, 4.2.0-beta

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-109573
  2. 2026-10-13 Alias added: GHSA-2v8j-hf72-c5w9
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: MEDIUM → HIGH

References

Advisory 1

  • TI-2023-00296 Improper Authentication in thorsten/phpmyfaq CVSS 3.1CRITICAL 9.8
  • TI-2026-76118 Authentication bypass in phpMyFAQ via WebAuthn credential injection CVSS 4.0CRITICAL 9.3
  • TI-2026-32868 phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint CVSS 4.0CRITICAL 9.3
  • TI-2026-76108 Unauthenticated denial of service in phpMyFAQ API pagination CVSS 4.0HIGH 8.7
  • TI-2026-53313 phpMyFAQ 3.1.0 through 4.1.6 Authentication Bypass via LDAP CVSS 4.0HIGH 8.8
  • TI-2026-34083 phpMyFAQ - Unauthenticated Information Disclosure via getIdFromSolutionId Permission Bypass CVSS 4.0HIGH 8.7
See all 224 →

Sources

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