CVE-2026-58483 mcp-searxng - Denial of Service

mcp-searxng < 1.7.1 contains a denial of service caused by missing Content-Length header bypassing content length checks in URL reading, letting unauthenticated HTTP clients cause unbounded memory and CPU use, exploit requires no authentication.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.67% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Update to version 1.7.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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