knowns through 0.33.0 Path Traversal via Template Engine
Priority HIGH 72CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
knowns through 0.33.0 fails to properly validate template destination paths in the code generation template engine, allowing attackers to read and write arbitrary files outside the project root. Attackers can supply malicious templates that traverse directories to overwrite shell profiles, steal credentials, or achieve persistent code execution on victim systems.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00651 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| knowns-dev | knowns | up to 0.33.0 | — | No fix listed | CNA |
- knowns Vendorknowns-dev Affected up to 0.33.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-88937
- 2026-10-03 Alias added: GHSA-86p5-fgr2-j5mh
- 2026-10-14 EPSS moved to the 50th–90th percentile
References
More knowns-dev vulnerabilities
- TI-2026-60300 knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption CVSS 4.0HIGH 8.7
- TI-2026-59217 knowns before 0.30.0 Arbitrary Code Execution via LSP Binary CVSS 4.0HIGH 8.5
- TI-2026-60301 knowns through 0.33.0 Arbitrary Directory Enumeration via workspace browse endpoint CVSS 4.0MEDIUM 6.9
- TI-2026-60299 knowns through 0.33.0 Path Traversal via code.find MCP tool CVSS 4.0HIGH 7.1
- TI-2026-60283 knowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory Header CVSS 4.0CRITICAL 9.3
- TI-2026-59220 knowns before 0.30.0 Unauthenticated Management API Exposure CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-88937 · CVE Program
- CVE-2026-88937 · NVD
- FIRST EPSS
- GHSA-86p5-fgr2-j5mh · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences