DEBIAN-CVE-2026-53727
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-53727
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53727.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-53727
- Upstream
- Published
- 2026-07-17T21:17:07Z
- Modified
- 2026-09-14T17:03:19Z
- Severity
-
- 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
css_parser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parser#read_remote_file in lib/css_parser/parser.rb, and therefore load_uri! and the @import-following branch of add_block!, issued HTTP and HTTPS requests against any host, port, and URI without a scheme allowlist, host or IP filtering, or protection against link-local, loopback, or RFC-1918 addresses. Location: redirects were followed recursively back into the same function, which also serviced file:// URIs, so a single attacker-controlled HTTP redirect could upgrade the bug from SSRF to arbitrary local file disclosure. Any consumer of css_parser that hands it attacker-influenced CSS together with a base_uri: option is exposed. This issue is fixed in version 3.0.0.
- References
Affected packages
Debian:12 / ruby-css-parser
Package
- Name
- ruby-css-parser
- Purl
- pkg:deb/debian/ruby-css-parser?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / ruby-css-parser
Package
- Name
- ruby-css-parser
- Purl
- pkg:deb/debian/ruby-css-parser?arch=source&distro=trixie
Debian:14 / ruby-css-parser
Package
- Name
- ruby-css-parser
- Purl
- pkg:deb/debian/ruby-css-parser?arch=source&distro=forky