CVE-2026-91995: Unverified Password Change in pig-mesh pig
pig versions before 4.1.0 have an authentication bypass vulnerability in the /register/password endpoint. This flaw allows remote attackers to bypass password verification and change any account's password, including the admin account, without knowing the current password. Exploitation grants full administrative control over the affected system.
AI Analysis
Technical Summary
CVE-2026-91995 describes an authentication bypass vulnerability in pig before version 4.1.0. The issue exists because the /register/password endpoint discards the results of password verification, allowing attackers to submit any value as the current password. This enables remote attackers to overwrite credentials for any user account, including administrative accounts, thereby gaining full administrative privileges.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to change the password of any user account, including the administrator, resulting in full administrative control over the pig system. This represents a critical security risk as it completely compromises account integrity and system security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the /register/password endpoint and monitor for suspicious activity related to password changes.
CVE-2026-91995: Unverified Password Change in pig-mesh pig
Description
pig versions before 4.1.0 have an authentication bypass vulnerability in the /register/password endpoint. This flaw allows remote attackers to bypass password verification and change any account's password, including the admin account, without knowing the current password. Exploitation grants full administrative control over the affected system.
CVSS v4.0
Score 9.3critical
Affected software
pig-mesh
pig
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91995 describes an authentication bypass vulnerability in pig before version 4.1.0. The issue exists because the /register/password endpoint discards the results of password verification, allowing attackers to submit any value as the current password. This enables remote attackers to overwrite credentials for any user account, including administrative accounts, thereby gaining full administrative privileges.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to change the password of any user account, including the administrator, resulting in full administrative control over the pig system. This represents a critical security risk as it completely compromises account integrity and system security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the /register/password endpoint and monitor for suspicious activity related to password changes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-15T11:11:13.312Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa9305055bf5e2cf5c40bd3
Added to database: 09/15/2026, 11:47:28 UTC
Last enriched: 09/15/2026, 12:01:30 UTC
Last updated: 09/15/2026, 12:20:36 UTC
Views: 5
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