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TI-2026-83338 Aliases CVE-2026-120007GHSA-2xj9-m79m-chvg

Authorization bypass in NodeBB lets visitors act on other accounts

Priority LOW 36CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

NodeBB from 1.18.0 through 4.16.5 contains an authorization bypass (CWE-639) that lets unauthenticated visitors act on other accounts by supplying a uid during registration. A remote unauthenticated attacker can clear a victim's email and confirmation state and revoke all of their sessions.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Description from the CNA

NodeBB 1.18.0 through 4.16.5 contains an authorization bypass vulnerability that allows unauthenticated visitors to act on other accounts by supplying a uid during POST /register. Attackers can submit an empty email at the /register/complete interstitial to clear a victim's email and confirmation state and revoke all their sessions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00338 27th 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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
NodeBBNodeBB1.18.0 – 4.16.5—No fix listedCNA
  • NodeBB VendorNodeBB Affected 1.18.0 – 4.16.5 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

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

CPEVersionsRoleVendor
cpe:2.3:a:nodebb:nodebb:*:*:*:*:*:*:*:*——NodeBB
  • cpe:2.3:a:nodebb:nodebb:*:*:*:*:*:*:*:* Versions — — ·NodeBB

Remediation

The sources list no fixed version for NodeBB.

Written with Claude Haiku 5.5 from the sources below · 2026-10-31

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-120007
  2. 2026-10-30 CISA SSVC decision points changed
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-10-30 Alias added: GHSA-2xj9-m79m-chvg

References

Patch 1

Other 3

  • TI-2023-23124 A remote code execution (RCE) vulnerability in the xmlrpc.php endpoint of NodeBB Inc… CVSS 3.1CRITICAL 9.8
  • TI-2022-22808 Account takeover via prototype vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-42173 NodeBB - ActivityPub Author Spoofing via Unvalidated attributedTo Mapped to Local User CVSS 4.0HIGH 8.7
  • TI-2025-32286 NodeBB v4.3.0 is vulnerable to SQL injection in its search-categories API endpoint… CVSS 3.1HIGH 8.6
  • TI-2021-22363 NodeBB Plugin Emoji 3.2.1 - Arbitrary File Write CVSS 4.0HIGH 8.6
  • TI-2023-14416 NodeBB Pre-Authentication Denial-of-Service CVSS 3.1HIGH 7.5
See all 23 →

Sources

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