Vulnerability · Published Oct 12, 2026 · Assigned by GitHub_M

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

Medium 4.3

In plain English

A medium-severity information exposure in OpenList from OpenListTeam. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.3%top 82.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/OpenListTeam/OpenList	no fix listed	GO-2026-6113
Go	github.com/OpenListTeam/OpenList/v3	no fix listed	GO-2026-6113
Go	github.com/OpenListTeam/OpenList/v4	4.2.4	GHSA-p6ph-3jx2-3337
Go	github.com/OpenListTeam/OpenList/v4	4.2.4	GO-2026-6113

Affected products (as reported)

Vendor	Product	Versions
OpenListTeam	OpenList	< 4.2.4

Weakness: CWE-200, CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

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