CVE-2026-126070 Action View: Possible XSS vulnerability in Action View strip_tags
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-126070?
CVE-2026-126070 is a medium-severity vulnerability in rails, published on 10 Nov 2026.
Official description
Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, strip_tags in Action View returns its sanitized output marked html_safe, but the underlying sanitizer encodes only &, < and >, leaving " and ' unencoded. Because ERB does not escape a string marked html_safe, untrusted input passed through strip_tags and rendered inside a quoted HTML attribute value could close the attribute and add new attributes, possibly leading to XSS. Applications that render strip_tags output from untrusted input inside an HTML attribute, for example in a title attribute or a <meta content> tag, are affected. Output rendered as element content is not affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.
Weakness: CWE-79
Which versions are affected by CVE-2026-126070?
2 open source packages ship an affected version, including actionview.
| Package | Affected | Fixed in |
|---|---|---|
actionview RubyGems | All versions | 8.0.5.2 |
actionview RubyGems | From 8.1.0.beta1 | 8.1.4.1 |
How do I fix CVE-2026-126070?
Upgrade actionview to a fixed version for your release line: 8.0.5.2 or 8.1.4.1.
Is CVE-2026-126070 being exploited?
There is no known exploitation of CVE-2026-126070 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-126070, GHSA-rq8q-p985-fjq7, UBUNTU-CVE-2026-126070.