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CVE-2026-18954VulnerabilityPublished

Amazon AWS Labs DocumentDB MCP Server · Incorrect Authorization

Source GCVE Database

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Authoritative record:CVE-2026-18954· Medium 5.5

Not known to be exploited · CVSS 5.5 Medium : upgrade to 1.0.12 when convenient.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.0.12
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Aug 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 5 Nov 2026.

What to do

Upgrade documentdb-mcp-server and awslabs/documentdb-mcp-server to 1.0.12.

Affected software

ProductAffectedFixed in
AWSdocumentdb-mcp-serverAffected
  • <1.0.12
Fixed in
  • 1.0.12
GitHubawslabs/documentdb-mcp-serverpkg:github/awslabs/documentdb-mcp-serverOther threatsAffected
  • <1.0.12
Fixed in
  • 1.0.12

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Amazon AWS Labs DocumentDB MCP Server to version 1.0.12 or later to remediate this authorization bypass vulnerability. No other mitigations are indicated.

Description

An authorization flaw in the aggregation pipeline tool of Amazon AWS Labs DocumentDB MCP Server versions before 1.0.12 allows an authenticated MCP client to perform unauthorized write operations by bypassing read-only mode enforcement. This vulnerability is fixed in version 1.0.12.

References

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