CVE record · CVE-2026-77156

ast-cli: Path traversal in tar extraction on Linux/macOS allows writes outside the install directory

CVSS 6.3 MediumEPSS 0.0035 · 28th percentile

Published by the CVE Program (CNA: Checkmarx) at 22 Oct 2026, 17:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Checkmarx	github.com/checkmarx/ast-cli Package name: github.com/checkmarx/ast-cli https://golang.org/pkg	affected before 2.3.51 semver unaffected 2.3.51 semver Other versions: unaffected

Identifiers: CVE-2026-77156
CNA: Checkmarx
Weakness (CWE): CWE-22
Tags: github.com/checkmarx/ast-cli
Path traversal
Published: 22 Oct 2026
Updated: 2 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.4	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H	CNA (Checkmarx)
6.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H	CNA (Checkmarx)Used for this record

CISA KEV Not listed.
EPSS 0.0035, the 28th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

22 Oct 2026, 17:44 UTC Confirmed by the CVE List
22 Oct 2026, 18:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/Checkmarx/ast-cli product
github.com/Checkmarx/ast-cli/security/advisories/GHSA-9gff-3q53-q75x vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.