DEBIAN-CVE-2026-63385
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-63385
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-63385.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-63385
- Upstream
- Published
- 2026-08-20T18:16:36Z
- Modified
- 2026-09-18T16:01:17Z
- Severity
-
- 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has two HTTP parsing weaknesses in http.c. evhttp_decode_uri_internal decodes percent-encoded %00 bytes into literal NUL characters, which can cause downstream C string operations to truncate a path and bypass validation performed on a different representation. evhttp_header_is_valid_value also accepts obsolete line folding in header values containing carriage return or line feed characters, allowing a proxy and libevent to interpret headers differently and enabling header injection or access control bypass. The CRLF header acceptance is fixed in versions 2.1.13 and 2.2.2-alpha, but the reviewed patches do not clearly remediate the URI NUL-truncation condition.
- References
Affected packages
Debian:12 / libevent
Package
- Name
- libevent
- Purl
- pkg:deb/debian/libevent?arch=source&distro=bookworm
Debian:13 / libevent
Package
- Name
- libevent
- Purl
- pkg:deb/debian/libevent?arch=source&distro=trixie
Debian:14 / libevent
Package
- Name
- libevent
- Purl
- pkg:deb/debian/libevent?arch=source&distro=forky