CVE-2026-88899: External Control of File Name or Path in knowns-dev knowns
knowns versions before 0.31.0 fail to properly validate the x-opencode-directory request header in the /api/opencode proxy endpoint. Remote attackers can supply arbitrary directory paths to execute file operations outside the project root on the host system.
CVE-2026-88899: External Control of File Name or Path in knowns-dev knowns
Description
knowns versions before 0.31.0 fail to properly validate the x-opencode-directory request header in the /api/opencode proxy endpoint. Remote attackers can supply arbitrary directory paths to execute file operations outside the project root on the host system.
CVSS v4.0
Score 9.3critical
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-10T11:28:50.297Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa2d18f8744ddd5a6dabc3a
Added to database: 09/10/2026, 15:49:35 UTC
Last updated: 09/10/2026, 15:51:05 UTC
Views: 3
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