Server-side request forgery in Aas-ee open-webSearch
Priority HIGH 75CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-693.
Summary
Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF with the response body returned to the caller. This vulnerability is fixed in 2.1.7.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00261 17th percentileScored 2026-11-07
Fix Fixed open-webSearch (Aas-ee): 2.1.7open-websearch (npm): 2.1.7
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| Aas-ee | open-webSearch | before 2.1.7 | 2.1.7 | Patch available | CNA |
| — | open-websearch (npm) | before 2.1.7 | 2.1.7 | Patch available | GHSA-v228-72c7-fx8j |
- open-webSearch VendorAas-ee Affected before 2.1.7 Fixed in 2.1.7 Patch available CNA
- open-websearch (npm) Vendor— Affected before 2.1.7 Fixed in 2.1.7 Patch available GHSA-v228-72c7-fx8j
Remediation
- Fix · CNA open-webSearch (Aas-ee) Fixed in 2.1.7
- Fix · GHSA-v228-72c7-fx8j open-websearch (npm) Fixed in 2.1.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42260
- 2026-10-03 Alias added: GHSA-v228-72c7-fx8j
References
Sources
- CVE-2026-42260 · CVE Program
- CVE-2026-42260 · NVD
- FIRST EPSS
- GHSA-v228-72c7-fx8j · 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