CVE-2026-58483Public exploitNetwork attack vectorHinoki check available

Denial of service via unbounded response reads

Published Sep 15, 2026 · Updated Sep 15, 2026

Uncontrolled resource consumption in mcp-searxng before 1.7.1 allows remote attackers to interrupt service through web_url_read. When a preliminary HEAD response omits Content-Length, checkContentLength() returns null and response.text() consumes the complete GET body before NodeHtmlMarkdown.translate() processes it. Default HTTP transport requires no authentication, and repeated or concurrent requests can exhaust memory and CPU until the server process becomes unavailable.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Uncontrolled resource consumption in mcp-searxng before 1.7.1 allows remote attackers to interrupt service through web_url_read. When a preliminary HEAD response omits Content-Length, checkContentLength() returns null and response.text() consumes the complete GET body before NodeHtmlMarkdown.translate() processes it. Default HTTP transport requires no authentication, and repeated or concurrent requests can exhaust memory and CPU until the server process becomes unavailable.

The record

CVE
CVE-2026-58483
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Ihor Sokoliuk
Product
mcp-searxng
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ihor Sokoliuk · mcp-searxngversion=< 1.7.1

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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