CVE catalog
CVE-2026-103431
colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored hos
- Severity
- High · CVSS 7.7
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.18% · Oct 25, 2026
colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0]).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | collectl | sid | 4.3.20.2-1 | vulnerable |
| Debian | collectl | forky | 4.3.20.2-1 | vulnerable |
| Debian | collectl | trixie | 4.3.1-1 | vulnerable |
| Debian | collectl | bookworm | 4.3.1-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | collectl | source | sid | (unfixed) | unimportant | Not reported | [1149711] |
| Debian | collectl | source | forky | (unfixed) | unimportant | Not reported | [1149711] |
| Debian | collectl | source | trixie | (unfixed) | unimportant | Not reported | [1149711] |
| Debian | collectl | source | bookworm | (unfixed) | unimportant | Not reported | [1149711] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [collectl]Affected
Details (2)
4.3.1-1· all · bookwormAffected
nvd · collectl · debian · bookworm; nvd · collectl · debian · 12
4.3.1-1· all · bookwormAffected
nvd · collectl · debian · bookworm; nvd · collectl · debian · 12
[Debian 13 (Trixie)]
- [collectl]Affected
Details (2)
4.3.1-1· all · trixieAffected
nvd · collectl · debian · 13
4.3.1-1· all · trixieAffected
nvd · collectl · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-103431]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-103431]
- [https://security-tracker.debian.org/tracker/CVE-2026-103431]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103431.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]