node-tar: Negative tar entry size causes infinite loop in archive replace
High-risk advisory
CVE-2026-59874
Summary
node-tar: Negative tar entry size causes infinite loop in archive replace
Why it matters
GitHub has published a reviewed security advisory for tar. Prioritize it with other application dependency updates, especially because EPSS places it in the 28% percentile.
Operator check
Check whether tar is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.7. EPSS probability: 0.4%; percentile: 28%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.