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TI-2026-35957 Aliases CVE-2026-48611GHSA-24pr-8ggp-h88c

Improper authentication in phpBB

Priority MEDIUM 55CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

Improper authentication checks in the OAuth implementation allow account hijacking even when OAuth is not configured or enabled leading to unauthorized access in default installations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0386 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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
phpBBphpBB3.3.0 – 3.3.16—No fix listedCNA
  • phpBB VendorphpBB Affected 3.3.0 – 3.3.16 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48611
  2. 2026-10-03 Alias added: GHSA-24pr-8ggp-h88c
  3. 2026-10-25 EPSS moved to the 90th–95th percentile

References

Other 1

  • TI-2025-43137 Cross Site Request Forgery vulnerability in Phpbb phbb3 v.3.3.15 allows a local attacker… CVSS 3.1HIGH 8.8
  • TI-2006-06889 PHP remote file inclusion vulnerability in includes/bb_usage_stats.php in maluinfo… CVSS 2.0HIGH 10.0
  • TI-2001-01423 prefs.php in phpBB 1.4.0 and earlier allows remote authenticated users to execute… CVSS 3.1HIGH 8.8
  • TI-2007-03812 PHP remote file inclusion vulnerability in link_main.php in the SupaNav 1.0.0 module for… CVSS 2.0HIGH 9.3
  • TI-2006-06915 PHP remote file inclusion vulnerability in includes/functions.php in the Dimension module… CVSS 2.0HIGH 10.0
  • TI-2008-03086 Unspecified vulnerability in phpBB before 3.0.1 has unknown impact and attack vectors… CVSS 2.0HIGH 10.0
See all 67 →

Sources

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