CVE-2026-91995CWE-620

CVE-2026-91995

Critical · published September 15, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
58.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
9.3 · 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
EPSS
0.00876 · 58.6th percentile
Weakness
CWE-620 · Unverified Password Change
Published
2026-09-15T16:17Z
References (7)
https://github.com/geo-chen/oss/blob/main/pig.md · [email protected]https://github.com/pig-mesh/pig · [email protected]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 · [email protected]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 · [email protected]https://github.com/pig-mesh/pig/commit/ce958668f399110b97b3f1fcc5f517ff9bcfd535 · [email protected]https://github.com/pig-mesh/pig/issues/1249 · [email protected]https://www.vulncheck.com/advisories/pig-before-4.1.0-unverified-password-change-via-register-password · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 1%
    epss
  • 15 SEP 11:35Z
    pig before 4.1.0 Unverified Password Change via /register/password
    cvelistv5