TI-2021-20114 Aliases CVE-2021-44512 GHSA-mpgw-pwqr-q9jp

World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0…

LOW 30CWE-732Published 2021-12-07 · Updated 2024-08-04

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

World-writable permissions on the /tmp/tmate/sessions directory in tmate-ssh-server 2.3.0 allow a local attacker to compromise the integrity of session handling, or obtain the read-write session ID from a read-only session symlink in this directory.

Why it matters now

EPSS 0.00262 18th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:tmate:tmate-ssh-server::::::::	up to 2.3.0	Vulnerable	Tmate

cpe:2.3:a:tmate:tmate-ssh-server:*:*:*:*:*:*:*:* Versions up to 2.3.0 Vulnerable ·Tmate

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-44512
2026-10-03 Alias added: GHSA-mpgw-pwqr-q9jp

References

Patch 1

https://github.com/tmate-io/tmate-ssh-server/commit/1c020d1f5ca462f5b150b46a027aaa1bbe3c9596

Advisory 1

https://www.openwall.com/lists/oss-security/2021/12/06/2

TI-2021-20115 Insecure creation of temporary directories in tmate-ssh-server 2.3.0 allows a local… CVSS 3.1HIGH 7.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences