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CVE-2026-39246

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 i
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:996bd39f49e595e478948419709b32aff48d17a6c90d50b5cafa94b618fda9f6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-59","description":"CWE-59 Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-59","description":"CWE-59 Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

4 source assertions
{"url":"https://github.com/kevva/decompress"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/kevva/decompress/issues/114"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/adp/0/references/0
{"url":"https://github.com/kevva/decompress/issues/114"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/cna/references/2
{"url":"https://www.npmjs.com/package/decompress"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:546d49aced933ad828b8d936f1010f3fb61e6edfcad19037742cb4a6af19e4c0 · sha256:f2ab208903b05c52… · /containers/cna/references/1

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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