CVE-2026-54689

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Source
https://cve.org/CVERecord?id=CVE-2026-54689
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54689.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54689
Aliases
Published
2026-09-15T17:45:19Z
Modified
2026-09-16T03:46:49Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N CVSS Calculator
Summary
mcp-searxng hardened-mode SSRF bypasses permit internal URL access
Details

mcp-searxng is a Model Context Protocol server that gives AI assistants web search and URL-reading capabilities through SearXNG. Prior to 1.2.0, the web_url_read URL policy in src/url-reader.ts can be bypassed while MCP_HTTP_HARDEN is enabled and MCP_HTTP_ALLOW_PRIVATE_URLS is not enabled because redirect targets are not revalidated, 0.0.0.0 is not classified as an internal address, and IPv4-mapped IPv6 literals canonicalized to hexadecimal form are not recognized. These inputs allow an attacker-influenced tool call to make the MCP server fetch loopback or internal HTTP resources and return content from local services, private APIs, service-mesh endpoints, or cloud metadata endpoints. The separate hostname-to-private-address case addressed by the earlier partial fix is not part of these residual bypasses. This issue is fixed in version 1.2.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200",
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54689.json"
}
References

Affected packages

Git / github.com/ihor-sokoliuk/mcp-searxng

Affected ranges

Type
GIT
Repo
https://github.com/ihor-sokoliuk/mcp-searxng
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
da4d43b5123dae694d6bd9c67b8ab2f19ff23cd1
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.2.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.10.0
v0.10.1
v0.10.3
v0.10.4
v0.10.5
v0.3.1
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v0.6.0
v0.7.10
v0.7.11
v0.7.12
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v0.8.0
v0.9.0
v0.9.1
v0.9.2
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.1.0
v1.1.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54689.json"