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CVE-2026-42885

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/filesystem/pathexists endpoint uses String.startsWith() to validate that a resolved file path is within a library folder. This check fails for sibling directories whose names share a common prefix (e.g., /audiobooks vs /audiobooks-private), allowing authenticated users with upload permission to probe file existence outside their authorized library folder boundaries. This vulnerability is fixed in 2.32.2.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:34dfe75adee0d7a0d87f6d9ee3058e1cbfe1b59a66b54f04e68d6d0a7ac0915c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"audiobookshelf","vendor":"advplyr","versions":[{"status":"affected","version":"< 2.33.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cf7218b0547e61504bef6d90ac80addfa53482f98d97e5a12ada29e7ea1c7701 · sha256:76d02896c4405a3b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cf7218b0547e61504bef6d90ac80addfa53482f98d97e5a12ada29e7ea1c7701 · sha256:76d02896c4405a3b… · /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:cf7218b0547e61504bef6d90ac80addfa53482f98d97e5a12ada29e7ea1c7701 · sha256:76d02896c4405a3b… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-rhjg-p6cm-38w2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-rhjg-p6cm-38w2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cf7218b0547e61504bef6d90ac80addfa53482f98d97e5a12ada29e7ea1c7701 · sha256:76d02896c4405a3b… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-rhjg-p6cm-38w2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cf7218b0547e61504bef6d90ac80addfa53482f98d97e5a12ada29e7ea1c7701 · sha256:76d02896c4405a3b… · /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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