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CVE-2026-44788

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 PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8baf785758cf379ccb545dd257bdf6db179ae0d6801fb65797b0856b3c31e2b9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"sharpcompress","vendor":"adamhathcock","versions":[{"status":"affected","version":"<= 0.47.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:eec3ec6204cb8b3de67c81ea1655f50703a9e2a5fa4b05259bbecc34d681db91 · sha256:3fc29fe44b45a3d3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:eec3ec6204cb8b3de67c81ea1655f50703a9e2a5fa4b05259bbecc34d681db91 · sha256:3fc29fe44b45a3d3… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:eec3ec6204cb8b3de67c81ea1655f50703a9e2a5fa4b05259bbecc34d681db91 · sha256:3fc29fe44b45a3d3… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338","tags":["x_refsource_CONFIRM"],"url":"https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:eec3ec6204cb8b3de67c81ea1655f50703a9e2a5fa4b05259bbecc34d681db91 · sha256:3fc29fe44b45a3d3… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:eec3ec6204cb8b3de67c81ea1655f50703a9e2a5fa4b05259bbecc34d681db91 · sha256:3fc29fe44b45a3d3… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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