Low 2.3Published Mar 23, 2026

CVE-2026-33168Rails has a possible XSS vulnerability in its Action View tag helpers

Updated under an hour ago (Oct 27, 2026, 4:40 AM ET)

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It affects rails actionview. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for rails actionview

Exploited in the last 30 days

Action View provides conventions and helpers for building web pages with the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, when a blank string is used as an HTML attribute name in Action View tag helpers, the attribute escaping is bypassed, producing malformed HTML. A carefully crafted attribute value could then be misinterpreted by the browser as a separate attribute name, possibly leading to XSS. Applications that allow users to specify custom HTML attributes are affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

CVSS: 2.3 LOW (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Mar 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rails actionview rails:actionview (from the name)	from 8.1.0.beta1, < 8.1.2.1; from 8.0.0.beta1, < 8.0.4.1; before 7.2.3.1	CNA record

References

References

https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cq	x-refsource-confirm
https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539c	x-refsource-misc
https://github.com/rails/rails/commit/63f5ad83edaa0b976f82d46988d745426aa4a42d	x-refsource-misc
https://github.com/rails/rails/commit/c79a07df1e88738df8f68cb0ee759ad6128ca924	x-refsource-misc
https://github.com/rails/rails/releases/tag/v7.2.3.1	x-refsource-misc
https://github.com/rails/rails/releases/tag/v8.0.4.1	x-refsource-misc
https://github.com/rails/rails/releases/tag/v8.1.2.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.