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VulnerabilityPublished

CVE-2026-123811: dynatrace-mcp · Missing Authentication for Critical Functionality

Affects dynatrace-mcpSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 2.0.0 soon.

Data as of 9 Nov 2026, 21:19 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.17.5
Patch
Available – fixed in 2.0.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Upgrade dynatrace-mcp to 2.0.0.

Affected software

ProductAffectedFixed in
dynatrace-ossdynatrace-mcpAffected
  • <2.0.0
Fixed in
  • 2.0.0

AI-suggested

Upgrade to dynatrace-mcp version 2.0.0 or later, where this vulnerability is fixed. Versions prior to 2.0.0 are affected. No other mitigation is indicated by the vendor advisory.

Description

CVE-2026-123811 is a vulnerability in dynatrace-oss dynatrace-mcp versions prior to 2.0.0 where the server started with the --http option accepts JSON-RPC requests without authentication or session validation. This allows network-reachable attackers to invoke critical functions such as reading logs, security events, and user sessions, or creating tenant-visible notebooks. The issue is fixed in version 2.0.0.

References

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