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  4. CVE 2026 34884 apache skywalking mcp ssrf via setskywalkingurl
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Back to active CVEs
Critical · CVSS 9.8CVE-2026-34884

Apache SkyWalking MCP: SSRF via set_skywalking_url Tool and GraphQL Expression Injection in MCP Server

Answer in brief

CVE-2026-34884 records a Critical severity (CVSS 9.8) vulnerability in Apache SkyWalking MCP: SSRF via set_skywalking_url Tool and GraphQL Expression Injection in MCP Server. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache SkyWalking MCP (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 18, 2026Updated Sep 2, 2026Source checked Oct 2, 2026First seen by HOL Aug 18, 2026Material review Sep 2, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache SkyWalking MCP (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:apache:skywalking_mcp:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/Apache SkyWalking MCPgeneric0.1.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache SkyWalking MCP.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • Source referencelists.apache.org
  • Source referenceopenwall.com
Upstream source description

SSRF via set_skywalking_url Tool and GraphQL expression injection vulnerability in Apache SkyWalking MCP. This issue affects Apache SkyWalking MCP: 0.1.0. Users are recommended to upgrade to version 0.2.0, which fixes this issue.

Quoted source text, attributed separately from HOL analysis.

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  • CISA ADP VulnrichmentSame generic ecosystem
  • Tenda AC9 POST Request fast_setting_internet_set stack-based overflowSame generic ecosystem
  • SourceCodester Student Result Management System Announcement new_announcement.php cross site scriptingSame generic ecosystem

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Oct 2, 2026
References
2 linked sources
Open source record