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CVE-2026-102663: OpenList: Search metadata/count disclosure via Non-Separator-Aware Path Check in Bleve Search

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-13
• Weakness: CWE-200

Description

OpenList is a file list program that supports multiple storage backends. Prior to 4.2.4, the OpenList search API uses a non-separator-aware strings.HasPrefix comparison as a path containment authorization check when authorizing globally indexed Bleve results against a restricted user's BasePath. When Bleve search is enabled and a restricted authenticated user searches the global index for content in a sibling path, the user causes a globally indexed sibling-path result to pass the prefix check. The strings.HasPrefix(node.Parent, user.BasePath) predicate allows a sibling path such as /base2 to be treated as contained by /base. Unauthorized file metadata or file-existence information can be disclosed, and the backend Total value can reveal a match even when another access check removes the individual result. This issue is fixed in version 4.2.4.

Affected products

• OpenListTeam OpenList: before 4.2.4

References

• https://github.com/OpenListTeam/OpenList/commit/59bd3431408578f420895457554700cc9a52375a
• https://github.com/OpenListTeam/OpenList/commit/84ecda35aae2bd0020474086e6ddfd3aa2340679
• https://github.com/OpenListTeam/OpenList/releases/tag/v4.2.4
• https://github.com/OpenListTeam/OpenList/security/advisories/GHSA-p6ph-3jx2-3337
• https://github.com/OpenListTeam/OpenList/security/advisories/GHSA-p6ph-3jx2-3337

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