CVE-2026-91995
pig before 4.1.0 Unverified Password Change via /register/password
- State
- Published
- Severity
- 9.3 Critical
- Published
- Sep 15, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 15, 2026
Description
pig before 4.1.0 contains an authentication bypass vulnerability in the /register/password endpoint where password verification results are discarded, allowing any value as the current password. Remote attackers can submit a username with an incorrect current password to overwrite any account credential including the admin account and gain full administrative control.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-620 Unverified Password Change
Affected Products
| Product | Versions |
|---|---|
pigpig-mesh |
|
References
- Researcher write-upthird-party-advisoryexploit
- GitHub Issue #1249 (content redacted by the maintainer)issue-tracking
- Fix commit ce958668patch
- SysUserServiceImpl.java at v4.0.0technical-description
- SysRegisterController.java at v4.0.0technical-description
- https://github.com/pig-mesh/pigproduct
- VulnCheck Advisory: pig before 4.1.0 Unverified Password Change via /register/passwordthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.