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CVE-2026-48782

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. In versions 1.56.0 through 1.101.0, 2.0.0b1, and 2.0.0b2, the cloud-metadata blocklist could be bypassed by encoding the metadata IP in an IPv6 transition form that the previous fix, CVE-2026-46678, did not decode, exposing cloud IAM short-term credentials. The previous remediation decoded only IPv4-mapped IPv6, 6to4, and the NAT64 well-known prefix, so the metadata guarantee did not hold for the
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6fa34ed675dd36e64a0b2d5b12d1dace37c89a705e032b55f207278faebc7139
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"pydantic-ai","vendor":"pydantic","versions":[{"status":"affected","version":">= 1.56.0, < 1.102.0"},{"status":"affected","version":">= 2.0.0b1, < 2.0.0b3"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/affected/0

{"product":"pydantic-ai-slim","vendor":"pydantic","versions":[{"status":"affected","version":">= 2.0.0b1, < 2.0.0b3"},{"status":"affected","version":">= 1.56.0, < 1.102.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"product":"pydantic-ai","vendor":"pydantic","versions":[{"status":"affected","version":">= 1.56.0, < 1.102.0"},{"status":"affected","version":">= 2.0.0b1, < 2.0.0b3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/affected/0
{"product":"pydantic-ai-slim","vendor":"pydantic","versions":[{"status":"affected","version":">= 2.0.0b1, < 2.0.0b3"},{"status":"affected","version":">= 1.56.0, < 1.102.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/pydantic/pydantic-ai/commit/1add06179ba4de259f7ab977620b697b7209f7e4","tags":["x_refsource_MISC"],"url":"https://github.com/pydantic/pydantic-ai/commit/1add06179ba4de259f7ab977620b697b7209f7e4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/references/2
{"name":"https://github.com/pydantic/pydantic-ai/pull/5596","tags":["x_refsource_MISC"],"url":"https://github.com/pydantic/pydantic-ai/pull/5596"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/references/1
{"name":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.102.0","tags":["x_refsource_MISC"],"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.102.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /containers/cna/references/3
{"name":"https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-cg7w-rg45-pc59","tags":["x_refsource_CONFIRM"],"url":"https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-cg7w-rg45-pc59"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:76bedd571571a387a0efd05c252f9d8206f7d74967bed53416286fa4b8cd8a34 · sha256:caea0febbd0e5608… · /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.

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