Medium severity · published Sep 10, 2026
CVE-2026-88940
knowns through 0.33.0 Arbitrary Directory Enumeration via workspace browse endpoint
5.3
CVSS
0.6%
EPSS
No
On KEV
Description
knowns through 0.33.0 fails to validate the path query parameter in the workspace browse endpoint, allowing remote attackers to enumerate arbitrary directories on the host filesystem. Attackers can traverse the directory structure to locate project directories and identify targets for further exploitation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KN
knowns · knowns-dev
through 0.33.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88940
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88940
github.com
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/server/routes/workspace.go#L42-L110
github.com
https://github.com/knowns-dev/knowns/security/advisories/GHSA-h73x-698r-qrvg
www.vulncheck.com
https://www.vulncheck.com/advisories/knowns-through-0.33.0-arbitrary-directory-enumeration-via-workspace-browse-endpoint
More from knowns
9.8
CVE-2026-88899
knowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory Header
9.8
CVE-2026-86543
knowns before 0.30.0 Unauthenticated Management API Exposure
9.1
CVE-2026-86542
knowns before 0.30.0 Path Traversal via Import Name
8.8
CVE-2026-88937
knowns through 0.33.0 Path Traversal via Template Engine
8.8
CVE-2026-86439
knowns before 0.30.0 Path Traversal via MCP doc and memory tools