# CVE-2026-126070: Action View: Possible XSS vulnerability in Action View strip_tags

Status: published. Published: 2026-11-10. Updated: 2026-11-12.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- rails / rails: < 8.0.5.2 (affected); >= 8.1, < 8.1.4.1 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: GitHub_M

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.27% as of 2026-11-12; percentile 19.25%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/rails/rails/security/advisories/GHSA-rq8q-p985-fjq7 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/rails/rails/commit/568b19cb860322885593e308a7f27aceb779e9d7 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/commit/c3772a10f405f9644125cbb484adfd2aa7a25a59 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/releases/tag/v8.0.5.2 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/releases/tag/v8.1.4.1 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/rails/rails/commit/568b19cb860322885593e308a7f27aceb779e9d7 (security-advisories@github.com)

- https://github.com/rails/rails/commit/c3772a10f405f9644125cbb484adfd2aa7a25a59 (security-advisories@github.com)

- https://github.com/rails/rails/releases/tag/v8.0.5.2 (security-advisories@github.com)

- https://github.com/rails/rails/releases/tag/v8.1.4.1 (security-advisories@github.com)

- https://github.com/rails/rails/security/advisories/GHSA-rq8q-p985-fjq7 (security-advisories@github.com)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-126070; retrieved 2026-11-12; source updated 2026-11-12

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126070; retrieved 2026-11-11; source updated 2026-11-10

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-126070; retrieved 2026-11-12; source updated Not reported

Revision: ca19a6665b329f41ee923236ad76adfc8ecc7bae453bc91ee50e24e0e185110b

Canonical: https://y2.dev/cve/CVE-2026-126070

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