Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N L N H N N 7.1 .0034 27.3 —
AFFECTED Product Versions Fixed tar-rs 0.4.11 – —
TIMELINE Aug 4 Reserved by VulnCheck Aug 10 Published (CNA: VulnCheck) Aug 11 EXPLOIT PUBLISHED — CVE-2026-70622 (composefs tar-rs). Public exploit reference added.
tar-rs versions 0.4.11 through 0.4.46 contain a symlink escape vulnerability in the Builder::append_dir_all() function that allows attackers to read files outside the intended source root directory by planting symlinks in an attacker-controlled directory. When a privileged process archives an untrusted directory, the function follows symlinks without verifying that resolved targets remain within the source root, causing out-of-bounds files to be included in the archive as regular files and disclosed to the attacker.
| Date | Event | Detail |
|---|---|---|
| August 4, 2026 | Reserved | Reserved by VulnCheck |
| August 10, 2026 | Published | Published (CNA: VulnCheck) |
| August 11, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-70622 (composefs tar-rs). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| composefs | tar-rs | — | 0.4.11 | — |
Authoritative record: CVE-2026-70622 at cve.org
Vendors: composefs
Weaknesses: CWE-59
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-70622 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.