CVE-2025-58054: Discourse is an open-source community discussion platform

Q: How do I fix CVE-2025-58054?

discourse: upgrade to 3.5.0, 3.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-58054 being exploited?

CVE-2025-58054 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-2025-58054 affect?

CVE-2025-58054 affects discourse. Severity is low (CVSS 3.5). Discourse is an open-source community discussion platform. Versions 3.5.0 and below are vulnerable to XSS attacks through parsing and rendering of chat channel titles and chat thread titles via the quote message functionality when using the

Q: How urgent is CVE-2025-58054?

Priority 15/100. No elevated risk signals yet.

Routine

LOW 3.5UPGRADE

CVE-2025-58054 is a low-severity flaw (CVSS 3.5) affecting discourse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Discourse is an open-source community discussion platform. Versions 3.5.0 and below are vulnerable to XSS attacks through parsing and rendering of chat channel titles and chat thread titles via the quote message functionality when using the rich text editor. This issue is fixed in version 3.5.1.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.5 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-80
Published	2025-10-01
Last modified	2026-10-19

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

Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-01 19:15 UTCPublished CVE record published
2026-10-19 17:10 UTCUpdated Record last modified

discourse discourse UPGRADE

Affected: < 3.5.0 · < 3.6.0 · 3.6.0 beta1

Fixed in: 3.5.0, 3.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.5.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade discourse

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-2025-58054?

discourse: upgrade to 3.5.0, 3.6.0. Exact commands for each OS are on this page.

Is CVE-2025-58054 being exploited?

CVE-2025-58054 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-2025-58054 affect?

CVE-2025-58054 affects discourse. Severity is low (CVSS 3.5). Discourse is an open-source community discussion platform. Versions 3.5.0 and below are vulnerable to XSS attacks through parsing and rendering of chat channel titles and chat thread titles via the quote message functionality when using the

How urgent is CVE-2025-58054?

Priority 15/100. No elevated risk signals yet.

Related CVEs

CVE-2025-59337 MEDIUM 6.8 UPGRADE Discourse is an open-source community discussion platform
CVE-2025-58055 MEDIUM 4.3 UPGRADE Discourse is an open-source community discussion platform
CVE-2025-61598 MEDIUM 5.3 UPGRADE Discourse is an open source discussion platform
CVE-2026-27481 MEDIUM 5.3 UPGRADE Discourse is an open-source discussion platform
CVE-2026-34947 MEDIUM 5.3 UPGRADE Discourse is an open-source discussion platform

References

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