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 PR UI S C I A CVSS EPSS %ile KEV N L N N U N H N 7.5 .0056 44.0 —
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Apr 6 Reserved by mitre Jul 9 EXPLOIT PUBLISHED — CVE-2026-39246. Public exploit reference added. Jul 9 Published (CNA: mitre)
decompress before 4.2.2 allows arbitrary symlink creation during archive extraction. When processing symlink entries (type === 'symlink'), the x.linkname field from the archive is passed directly to fs.symlink() without validation (index.js line 121). The preventWritingThroughSymlink check on line 98 only applies to file entries, not symlink creation. An attacker can craft an archive with symlink entries pointing to sensitive files outside the extraction directory (e.g., /etc/passwd), enabling information disclosure when the application reads the extracted contents.
| Date | Event | Detail |
|---|---|---|
| April 6, 2026 | Reserved | Reserved by mitre |
| July 9, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-39246. Public exploit reference added. |
| July 9, 2026 | Published | Published (CNA: mitre) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2026-39246 at cve.org
Weaknesses: CWE-59
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-39246 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.