by Kastro
Paper/Archive/CVE-2026-91995

CVE-2026-91995

pig-mesh pig — pig before 4.1.0 Unverified Password Change via /register/password

EPSS 0.9%CVSS 9.3
critical.is priorityof 100
40
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 59.0.590 × 2011.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
pig< 4.1.04.1.0CNA

Scores by source

VulnCheck (CNA)9.3CVSS: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 (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

exploitgithub.com/geo-chen/oss/blob/main/pig.mdrefgithub.com/pig-mesh/pig/issues/1249patchgithub.com/pig-mesh/pig/commit/ce958668f399110b97b3f1fcc5f517ff9bcfd535writeupgithub.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-L669writeupgithub.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/controller/SysRegisterController.java#L21-L53refgithub.com/pig-mesh/pigwriteupvulncheck.com/advisories/pig-before-4.1.0-unverified-password-change-via-register-password