Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Versions prior to 2.1.12 are vulnerable to cross-site scripting when pasting malicious code in the link field. An attacker could trick the user to copy&paste a malicious javascript: URL as a link that would execute arbitrary JavaScript code within the context of the user's session, potentially leading to unauthorized actions being performed or sensitive information being disclosed. Users should upgrade to Trix editor version 2.1.12 or later to receive a patch. In addition to upgrading, affected users can disallow browsers that don't support a Content Security Policy (CSP) as a workaround for this and other cross-site scripting vulnerabilities. Set CSP policies such as script-src 'self' to ensure that only scripts hosted on the same origin are executed, and explicitly prohibit inline scripts using script-src-elem.
CVE-2025-21610
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EG Risk
- 24(Track)EG Risk 24/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity53% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 33.3%
- KEV
- Not listed
Published
January 3, 2025
Last Modified
April 15, 2026
References (4)
- security-advisories@githubhttps://gist.github.com/th4s1s/3921fd9c3e324ad9a3e0d846166e3eb8
- security-advisories@githubhttps://github.com/basecamp/trix/commit/180c8d337f18e1569cea6ef29b4d03ffff5b5faa
- security-advisories@githubhttps://github.com/basecamp/trix/commit/c4f0d6f80654603932af6685694f694e96593b93
- security-advisories@githubhttps://github.com/basecamp/trix/security/advisories/GHSA-j386-3444-qgwg
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| trix | — | 2.1.12 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 122 total refreshes for this CVE.
- 2026-07-23 02:50 UTCEG score recompute
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Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2025-21610?
When was CVE-2025-21610 disclosed?
Is CVE-2025-21610 actively exploited?
What is the CVSS score of CVE-2025-21610?
How do I remediate CVE-2025-21610?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-21610
Is Your Infrastructure Affected by CVE-2025-21610?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.