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CVE-2026-26960

node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8eae401140166ec40554ac7dabfb97c4350749b33f779aa0d597ef671f971dec
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"node-tar","vendor":"isaacs","versions":[{"status":"affected","version":"< 7.5.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:1f09d500a09995c0920aed5cdef5e0ef1bc77dc00e8a831217a4021579f14668 · sha256:ac292ebc2e42f982… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:1f09d500a09995c0920aed5cdef5e0ef1bc77dc00e8a831217a4021579f14668 · sha256:ac292ebc2e42f982… · /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:v2:1f09d500a09995c0920aed5cdef5e0ef1bc77dc00e8a831217a4021579f14668 · sha256:ac292ebc2e42f982… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384","tags":["x_refsource_MISC"],"url":"https://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1f09d500a09995c0920aed5cdef5e0ef1bc77dc00e8a831217a4021579f14668 · sha256:ac292ebc2e42f982… · /containers/cna/references/1
{"name":"https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f","tags":["x_refsource_MISC"],"url":"https://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1f09d500a09995c0920aed5cdef5e0ef1bc77dc00e8a831217a4021579f14668 · sha256:ac292ebc2e42f982… · /containers/cna/references/2
{"name":"https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:1f09d500a09995c0920aed5cdef5e0ef1bc77dc00e8a831217a4021579f14668 · sha256:ac292ebc2e42f982… · /containers/cna/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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