CVE-2026-58483

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Source
https://cve.org/CVERecord?id=CVE-2026-58483
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58483.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-58483
Aliases
Published
2026-09-15T17:48:16Z
Modified
2026-09-16T03:46:50Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
mcp-searxng: Unbounded Response Body Read Bypasses URL Size Limit in `web_url_read`
Details

mcp-searxng is a Model Context Protocol server that gives AI assistants web search and URL-reading capabilities through SearXNG. Prior to 1.7.1, web_url_read in src/index.ts passes a caller-supplied URL to readUrlContent() in src/url-reader.ts, where checkContentLength() treats a missing Content-Length header as an inconclusive preflight and the normal and error paths then consume the complete body with response.text(). A server that omits Content-Length can therefore bypass URL_READ_MAX_CONTENT_LENGTH_BYTES and force unbounded memory use. The resulting string is also processed by NodeHtmlMarkdown.translate(), increasing CPU consumption and allowing an unauthenticated HTTP client to cause denial of service. This issue is fixed in version 1.7.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58483.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
2f5768e5be4d8102f9ce805e8a9105e33eb1795b
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.7.1"
        }
    ],
    "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
v1.2.0
v1.2.1
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.4.0
v1.5.0
v1.6.0
v1.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58483.json"