CVE-2026-91995

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/geo-chen/oss/blob/main/pig.md
https://github.com/pig-mesh/pig
https://github.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/controller/SysRegisterController.java#L21-L53
https://github.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/service/impl/SysUserServiceImpl.java#L650-L669
https://github.com/pig-mesh/pig/commit/ce958668f399110b97b3f1fcc5f517ff9bcfd535
https://github.com/pig-mesh/pig/issues/1249
https://www.vulncheck.com/advisories/pig-before-4.1.0-unverified-password-change-via-register-password

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 12:17

Updated : 2026-09-15 12:17

NVD link : CVE-2026-91995

Mitre link : CVE-2026-91995

CVE.ORG link : CVE-2026-91995

JSON object : View

Products Affected

No product.

CWE

CWE-620

Unverified Password Change

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