DEBIAN-CVE-2026-77422
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-77422
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77422.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-77422
- Upstream
- Published
- 2026-09-23T19:19:15Z
- Modified
- 2026-09-25T08:47:24Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
JLine is a Java library for handling console input. From 3.0.0 until 3.30.15 and 4.3.1, the JLine built-in grep command in builtins/src/main/java/org/jline/builtins/PosixCommands.java accepts a user-controlled regular expression in grep(...) and, unless line-regexp mode is used, automatically adds a dot-star prefix and suffix before compiling it with Java's backtracking regular expression engine. The wrapping expands the backtracking search space, so a short nested-quantifier expression evaluated against non-matching input can consume excessive CPU and indefinitely block a command worker, including in remotely exposed shell sessions. This issue is fixed in versions 3.30.15 and 4.3.1.
- References
Affected packages
Debian:12 / jline3
Package
- Name
- jline3
- Purl
- pkg:deb/debian/jline3?arch=source&distro=bookworm
Debian:13 / jline3
Package
- Name
- jline3
- Purl
- pkg:deb/debian/jline3?arch=source&distro=trixie
Debian:14 / jline3
Package
- Name
- jline3
- Purl
- pkg:deb/debian/jline3?arch=source&distro=forky