CVE-2026-41588: RELATE: Timing Attack Vulnerability in course/auth.py — check_sign_in_key()

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-08 · updated 2026-06-17
Weakness: CWE-208

Description

RELATE is a web-based courseware package. Prior to commit 2f68e16, there is a timing attack vulnerability in course/auth.py — check_sign_in_key(). This issue has been patched via commit 2f68e16.

Affected products

inducer relate: before 2026-04-17 — fixed in 2026-04-17

How to fix

Upgrade to a fixed version: inducer relate 2026-04-17. Check the vendor advisory for mitigations.

References

https://github.com/inducer/relate/commit/2f68e16cd3b96d25c188c1aa3f7e13cdb15cdaeb
https://github.com/inducer/relate/security/advisories/GHSA-78j7-9xr9-2728

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