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Vulnerability details: VCID-yh5j-pyzt-kyf1
Vulnerability ID VCID-yh5j-pyzt-kyf1
Aliases CVE-2026-44788
GHSA-6c8g-7p36-r338
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00012 https://api.first.org/data/v1/epss?cve=CVE-2026-44788
epss 0.00012 https://api.first.org/data/v1/epss?cve=CVE-2026-44788
epss 0.00012 https://api.first.org/data/v1/epss?cve=CVE-2026-44788
cvssv3.1 5.9 https://github.com/adamhathcock/sharpcompress
generic_textual MODERATE https://github.com/adamhathcock/sharpcompress
cvssv3.1 5.9 https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
cvssv3.1_qr MODERATE https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
generic_textual MODERATE https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
ssvc Track https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-6c8g-7p36-r338
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-44788
https://github.com/adamhathcock/sharpcompress
CVE-2026-44788 https://nvd.nist.gov/vuln/detail/CVE-2026-44788
GHSA-6c8g-7p36-r338 https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
GHSA-6c8g-7p36-r338 https://github.com/advisories/GHSA-6c8g-7p36-r338
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L Found at https://github.com/adamhathcock/sharpcompress
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L Found at https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-27T12:46:10Z/ Found at https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
Exploit Prediction Scoring System (EPSS)
Percentile 0.01849
EPSS Score 0.00012
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:42:39.317601+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/44xxx/CVE-2026-44788.json 38.6.0