CVE-2026-45390

9.1 CRITICAL
Published: June 15, 2026 Modified: June 16, 2026
View on NVD

Description

In OCaml-tar before 3.4.0, a crafted archive with ../ path segments in its name allows escaping the current working directory. This is not desired behavior, and tar(1) rejects such extractions, but ocaml-tar decompresses it anyway. The impact is that it allows arbitrary file writes outside of the desired extraction directory (to an attacker that can reach a tar decompression endpoint).

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://osv.dev/vulnerability/OSEC-2026-08
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.1 / 10.0
EPSS (Exploit Probability)
0.4%
29th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)