What is CVE-2026-33056?

CVE-2026-33056 is a medium-severity vulnerability in Alexcrichton Tar-rs, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 6.5/10. Published 2026-03-20.

How severe is CVE-2026-33056?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Alexcrichton Tar-rs

CVE-2026-33056

tar-rs is a tar archive reading/writing library for Rust. In versions 0.4.44 and below, when unpacking a tar archive, the tar crate's unpack_dir function uses fs::metadata() to check whether a path that already exists is a directory. Becau…

EPSS: 0.004 (30.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Alexcrichton Tar-rs — versions < 0.4.45
Tar_project Tar

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33056?: CVE-2026-33056 is a medium-severity vulnerability in Alexcrichton Tar-rs, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 6.5/10. Published 2026-03-20.
How severe is CVE-2026-33056?: Medium severity. CVSS v3 base score is 6.5 out of 10.