CVE-2026-33056: tar-rs is a tar archive reading/writing library for Rust

Q: How do I fix CVE-2026-33056?

tar: upgrade to 0.4.45. Exact commands for each OS are on this page.

Q: Is CVE-2026-33056 being exploited?

CVE-2026-33056 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33056 affect?

CVE-2026-33056 affects tar. Severity is medium (CVSS 6.5). 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. Becaus

Q: How urgent is CVE-2026-33056?

Priority 36/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2026-33056 is a medium-severity flaw (CVSS 6.5) affecting tar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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. Because fs::metadata() follows symbolic links, a crafted tarball containing a symlink entry followed by a directory entry with the same name causes the crate to treat the symlink target as a valid existing directory

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-61
Published	2026-03-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: tar project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-20 08:16 UTCPublished CVE record published
2026-06-17 10:36 UTCUpdated Record last modified

tar project tar UPGRADE

Affected: < 0.4.45

Fixed in: 0.4.45

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tar || rpm -q tar || tar --version

2. UPGRADE to 0.4.45 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tar

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Advisories and coverage

Official advisories

Rust Releases: Rust 1.94.1 2026-03-26

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33056?

tar: upgrade to 0.4.45. Exact commands for each OS are on this page.

Is CVE-2026-33056 being exploited?

CVE-2026-33056 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33056 affect?

CVE-2026-33056 affects tar. Severity is medium (CVSS 6.5). 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. Becaus

How urgent is CVE-2026-33056?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2026-5704 MEDIUM 5.0 MITIGATE MITIGATE A flaw was found in tar
CVE-2026-53655 MEDIUM 5.5 UPGRADE node-tar is a full-featured Tar for Node.js
CVE-2026-59871 MEDIUM 5.3 UPGRADE node-tar is a tar archive manipulation library for Node.js
CVE-2026-59873 HIGH 7.5 UPGRADE node-tar is a tar archive manipulation library for Node.js
CVE-2026-59874 HIGH 7.5 UPGRADE node-tar is a tar archive manipulation library for Node.js

References

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