CVE-2026-41588: RELATE is a web-based courseware package

Q: How do I fix CVE-2026-41588?

relate: upgrade to 2026-04-17. Exact commands for each OS are on this page.

Q: Is CVE-2026-41588 being exploited?

CVE-2026-41588 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-41588 affect?

CVE-2026-41588 affects relate. Severity is critical (CVSS 9.0). 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.

Q: How urgent is CVE-2026-41588?

Priority 44/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.0REMOTEUPGRADE

CVE-2026-41588 is a critical-severity flaw (CVSS 9.0) affecting relate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-208, CWE-203
Published	2026-05-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: inducer

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 15:16 UTCPublished CVE record published
2026-06-17 10:46 UTCUpdated Record last modified

inducer relate UPGRADE

Affected: < 2026-04-17

Fixed in: 2026-04-17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy relate || rpm -q relate || relate --version

2. UPGRADE to 2026-04-17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade relate

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade relate

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41588?

relate: upgrade to 2026-04-17. Exact commands for each OS are on this page.

Is CVE-2026-41588 being exploited?

CVE-2026-41588 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41588 affect?

CVE-2026-41588 affects relate. Severity is critical (CVSS 9.0). 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.

How urgent is CVE-2026-41588?

Priority 44/100. Critical severity; Remotely exploitable, no login, no user action

References

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