Collectl: collectl: colmux does not sanitize ansi/vt100 terminal escape sequences in data…
Priority LOW 35CWE-150Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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]).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00182 7th percentileScored 2026-11-07
Fix Fixed collectl: 4.3.20.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | collectl | before 4.3.20.3 | 4.3.20.3 | Patch available | CNA |
- collectl Vendor— Affected before 4.3.20.3 Fixed in 4.3.20.3 Patch available CNA
Remediation
- Fix · CNA collectl Fixed in 4.3.20.3
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-103431
- 2026-10-03 Alias added: GHSA-ggwj-h7wp-pg4f
References
Sources
- CVE-2026-103431 · CVE Program
- CVE-2026-103431 · NVD
- FIRST EPSS
- GHSA-ggwj-h7wp-pg4f · GitHub Advisory Database · CC BY 4.0
- CVE-2026-103431 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences