CVE-2026-44788 — Security Box Score

CVE · referencelatest edition

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.

CVE-2026-44788MEDIUM

adamhathcock sharpcompress — SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  N  H  N    6.5   .0031   24.1     —

AFFECTED
  Product        Versions     Fixed
  sharpcompress  <= 0.47.4 –  —

TIMELINE
  May 7   Reserved by GitHub_M
  May 26  EXPLOIT PUBLISHED — CVE-2026-44788 (adamhathcock sharpcompress). Public exploit reference added.
  May 26  Published (CNA: GitHub_M)

CWE-22 · CNA: GitHub_M · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

SharpCompress is a fully managed C# library to deal with many compression types and formats. In 0.47.4 and earlier, a path traversal vulnerability in IArchive.WriteToDirectory() allows a malicious archive to create directories outside the intended extraction root. For TAR archives, this can be escalated to arbitrary file writes by chaining with a symlink entry, giving a full write primitive on the target filesystem subject to the permissions of the running process.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 7, 2026	Reserved	Reserved by GitHub_M
May 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44788 (adamhathcock sharpcompress). Public exploit reference added.
May 26, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
adamhathcock	sharpcompress	—	<= 0.47.4	—

Weaknesses

CWE-22

References (1)

https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-44788 at cve.org

Vendors: adamhathcock

Weaknesses: CWE-22

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44788 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.