Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-16584

Improper handling of an initialization failure in AWS API MCP Server from 0.2.13 through 1.3.46 might allow an actor to bypass the user-configured security policy and execute AWS API operations that the policy was set to deny or gate. When initialization of the security policy enforcement data fails at server startup, the policy check is skipped for the lifetime of the process. IAM permissions on the configured credentials remain in effect and are unaffected. To remediate this issue, users sh
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:60763459a3aae12760b46441c79e3de634997a26552fc38025d5be986470a369
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":7.3,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"aws-api-mcp-server","vendor":"AWS","versions":[{"lessThan":"1.3.47","status":"affected","version":"0.2.13","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":7.3,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-455","description":"CWE-455 Non-exit on failed initialization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["vendor-advisory"],"url":"https://aws.amazon.com/security/security-bulletins/2026-063-aws/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://github.com/awslabs/mcp/security/advisories/GHSA-29w2-fq35-v728"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/references/2
{"tags":["release-notes","patch"],"url":"https://pypi.org/project/awslabs.aws-api-mcp-server/1.3.47/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8c0aceed8b0de152897ca85199fdcf923c25e17144079d5904348f7dd4f3a586 · sha256:f9355be062612606… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer