Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-13601: A flaw was found in Yelp due to an overly permissive Content Security Policy (CSP) implementation provided by yelp-xsl. A malicious Flatpak application can open crafted help content through the OpenURI portal. By embedding an untrusted CSS stylesheet within a structured SVG document, attacker-controlled content can bypass Flatpak's intended sandbox isolation, allowing Yelp to evaluate local XML inclusions and disclose arbitrary user-readable host files through remote CSS resource requests. This may result in the unauthorized disclosure of sensitive information.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | yelp | 2:3.28.1-1.amzn2.0.2 |
| Amazon Linux · 2 | yelp-debuginfo | 2:3.28.1-1.amzn2.0.2 |
| Amazon Linux · 2 | yelp-devel | 2:3.28.1-1.amzn2.0.2 |
| Amazon Linux · 2 | yelp-libs | 2:3.28.1-1.amzn2.0.2 |
Vulnerabilities 1
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High 7.1
Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications
A flaw was found in Yelp due to an overly permissive Content Security Policy (CSP) implementation provided by yelp-xsl. A malicious Flatpak application can open crafted help content through the OpenURI portal. By embedding an untrusted CSS stylesheet within a…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-13601.html