CVE-2026-73426

mediumpriority · track · 0EPSS 0.003 · 25 %ileUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.32% (25th) EPSS
CVSS 4.6 · medium
Is it mine?
2 products
Check your exposure
Who says so?
1 sources
osv

EPSS · scored 2026-10-28

Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.17, Trix is vulnerable to cross-site scripting when a data-trix-serialized-attributes attribute bypasses the DOMPurify sanitizer. An attacker can craft HTML containing a data-trix-serialized-attributes attribute with a malicious payload that, when rendered, executes arbitrary JavaScript in the user's session and may perform unauthorized actions or disclose sensitive information. This issue is fixed in version 2.1.17.

01

cvss

Technical severity, 0–10. One row per scoring source.

4.6
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.6mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:Nsecondary · security-advisories@github.comexploitability 2.1 · impact 2.5
v3.14.6mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:Nsecondary · OSV
v3.14.2mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USCWE-79US
03

affected products (2)

Products and version ranges known to be affected.

04

advisories (1)

Vendor and ecosystem advisories describing this.

  • GHSA-qmpg-8xg6-ph5qTrix has a Stored XSS vulnerability through serialized attributes2026-03-12ghsa · osvUS

    ### Impact The Trix editor, in versions prior to 2.1.17, is vulnerable to XSS attacks when a `data-trix-serialized-attributes` attribute bypasses the DOMPurify sanitizer. An attacker could craft HTML containing a `data-trix-serialized-attributes` attribute with a malicious payload that, when the content is rendered, could execute arbitrary JavaScript code within the context of the user's session, potentially leading to unauthorized actions being performed or sensitive information being disclosed. ### Patches Update Recommendation: Users should upgrade to Trix editor version 2.1.17 or later. ### References The XSS vulnerability was responsibly reported by Hackerone researcher [newbiefromcoma](https://hackerone.com/newbiefromcoma).

05

sources

Which sources assert this record, and when.

osvNVDCVE.orgMITRE
published 2026-08-18modified 2026-10-22
06

references (5) nvd

External citations — patches, advisories, analysis.

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