Skip to content
Fencer Intel
critical 9.8

CVE-2026-126768 json

OpsTree REMS through 1.0.0 Authentication Bypass via is_local_auth Flag

published 16h ago modified 15h ago also EUVD-2026-123673

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
—
no EPSS score yet
public exploits
0
none known

Summary

OpsTree REMS through 1.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid JWTs by setting the client-controlled is_local_auth field. Attackers can send a POST /api/v1/user/login/ request for the admin account with an invalid password and is_local_auth true to gain SuperUser administrative access.

Is CVE-2026-126768 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploits and checks

  • gist.github.com https://gist.github.com/neelkotnis/4676fe10859d84900025cf52188dae46 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • OpsTree Solutions REMS

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.