# CVE-2026-126768: OpsTree REMS through 1.0.0 Authentication Bypass via is_local_auth Flag

Status: published. Published: 2026-11-11. Updated: 2026-11-11.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- OpsTree Solutions / REMS: ≥ 0; ≤ 1.0.0 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 9.3 (critical); 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; source: CNA: VulnCheck

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-287

## Exploit evidence

- exploit: https://gist.github.com/neelkotnis/4676fe10859d84900025cf52188dae46 (CNA: VulnCheck)

## References

- https://gist.github.com/neelkotnis/4676fe10859d84900025cf52188dae46 (CNA: VulnCheck; technical-description, exploit)

- https://opstree.com/rems-ai-powered-observability/ (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/opstree-rems-through-1.0.0-authentication-bypass-via-is-local-auth-flag (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-126768; retrieved 2026-11-11; source updated 2026-11-11

Revision: 0fe28c8c4c29d7a3386fef235cc70d1a0d1455601eccb1c8cc6839001869b484

Canonical: https://y2.dev/cve/CVE-2026-126768

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