CVE-2026-42885

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Source
https://cve.org/CVERecord?id=CVE-2026-42885
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42885.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42885
Aliases
  • GHSA-rhjg-p6cm-38w2
Published
2026-05-11T19:52:58.149Z
Modified
2026-07-15T01:48:58.515021167Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42885.json"
}
References

Affected packages

Git / github.com/advplyr/audiobookshelf

Affected ranges

Type
GIT
Repo
https://github.com/advplyr/audiobookshelf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b41db23994cb678241e0aeb19681f15ee6739c3a
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.33.2"
        }
    ]
}

Affected versions

0.*
0.9.61-beta
0.9.61-beta.0
v1.*
v1.0.0
v1.1.10
v1.1.11
v1.1.12
v1.1.13
v1.1.14
v1.1.15
v1.1.8
v1.1.9
v1.2.1
v1.2.4
v1.2.5
v1.2.6
v1.2.8
v1.3.1
v1.3.3
v1.3.4
v1.4.0
v1.4.1
v1.4.11
v1.4.2
v1.4.4
v1.4.6
v1.4.7
v1.4.9
v1.5.0
v1.5.5
v1.6.0
v1.7.0
v1.7.1
v1.7.2
v2.*
v2.0.1
v2.0.10
v2.0.11
v2.0.12
v2.0.13
v2.0.14
v2.0.15
v2.0.16
v2.0.17
v2.0.18
v2.0.19
v2.0.2
v2.0.20
v2.0.21
v2.0.22
v2.0.23
v2.0.24
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.10.0
v2.10.1
v2.11.0
v2.12.0
v2.12.1
v2.12.2
v2.12.3
v2.13.0
v2.13.1
v2.13.2
v2.13.3
v2.13.4
v2.14.0
v2.15.0
v2.15.1
v2.16.0
v2.16.1
v2.16.2
v2.17.0
v2.17.1
v2.17.2
v2.17.3
v2.17.4
v2.17.5
v2.17.6
v2.17.7
v2.18.0
v2.18.1
v2.19.0
v2.19.1
v2.19.2
v2.19.3
v2.19.4
v2.19.5
v2.2.0
v2.2.1
v2.2.10
v2.2.11
v2.2.12
v2.2.13
v2.2.14
v2.2.15
v2.2.16
v2.2.17
v2.2.18
v2.2.19
v2.2.2
v2.2.20
v2.2.21
v2.2.22
v2.2.23
v2.2.3
v2.2.4
v2.2.5
v2.2.6
v2.2.7
v2.2.8
v2.2.9
v2.20.0
v2.21.0
v2.22.0
v2.23.0
v2.24.0
v2.25.0
v2.25.1
v2.26.0
v2.26.1
v2.26.2
v2.26.3
v2.27.0
v2.28.0
v2.29.0
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.3.4
v2.3.5
v2.30.0
v2.31.0
v2.32.0
v2.32.1
v2.33.0
v2.33.1
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.4.4
v2.5.0
v2.6.0
v2.7.0
v2.7.1
v2.7.2
v2.8.0
v2.8.1
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42885.json"