CVE detail
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. 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 — and subsequently apply chmod to it. This allows an attacker to modify the permissions of arbitrary directories outside the extraction root. This issue has been fixed in version 0.4.45.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 17.9 · diversity 15.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
5 source links · newest first
- CVE-2026-33056 tar-rs: unpack_in can chmod arbitrary directories by following symlinksMicrosoft MSRC
Information published.
vendormsrc.microsoft.comApr 29, 2026, 8:45 AM - Security advisory for Cargo (CVE-2026-33056)Hacker News
Linked URL: https://blog.rust-lang.org/2026/03/21/cve-2026-33056/ | Posted by tcbrah | 4 points | 1 comments
communitynews.ycombinator.comMar 22, 2026, 4:25 PM - Security Advisory for CargoHacker News
Linked URL: https://blog.rust-lang.org/2026/03/21/cve-2026-33056/ | Posted by emschwartz | 11 points | 0 comments
communitynews.ycombinator.comMar 21, 2026, 6:43 PM No excerpt available.
Exploitgithub.comMar 20, 2026, 8:16 AMNo excerpt available.
Exploitgithub.comMar 20, 2026, 8:16 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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