DEBIAN-CVE-2026-53550
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-53550
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53550.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-53550
- Upstream
- Published
- 2026-06-22T16:16:38Z
- Modified
- 2026-09-14T17:03:43Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- [none]
- Details
-
js-yaml is a JavaScript YAML parser and dumper. Prior to 4.2.0 and 3.15.0, a crafted YAML document can trigger algorithmic CPU exhaustion in js-yaml merge-key processing (<<) by repeating the same alias many times in a merge sequence. This causes quadratic parse-time behavior relative to input size and can block a Node.js worker/event loop for seconds with a relatively small payload (tens of KB), resulting in denial of service. The issue is in merge handling inside lib/loader.js. This vulnerability is fixed in 4.2.0 and 3.15.0.
- References
Affected packages
Debian:12 / node-js-yaml
Package
- Name
- node-js-yaml
- Purl
- pkg:deb/debian/node-js-yaml?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / node-js-yaml
Package
- Name
- node-js-yaml
- Purl
- pkg:deb/debian/node-js-yaml?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / node-js-yaml
Package
- Name
- node-js-yaml
- Purl
- pkg:deb/debian/node-js-yaml?arch=source&distro=forky