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CVE-2026-65975 Pydantic AI AG-UI Adapter: A dangling client-submitted tool call can execute when a trailing message is dropped during `sanitize_messages`

🗓️ 29 Jul 2026 20:06:09Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Flaw in Pydantic AI adapters lets client-supplied tool calls run server tools when a trailing message is dropped; fixed in 1.107.1 and 2.5.0.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-65975
29 Jul 202620:06
attackerkb
cve
CVE
CVE-2026-65975
29 Jul 202620:06
cve
euvd
EUVD
EUVD-2026-50555
29 Jul 202620:06
euvd
nvd
NVD
CVE-2026-65975
29 Jul 202621:17
nvd
ptsecurity
Positive Technologies
PT-2026-65900
29 Jul 202600:00
ptsecurity
[
  {
    "vendor": "pydantic",
    "product": "pydantic-ai",
    "versions": [
      {
        "version": ">= 1.88.0, < 1.107.1",
        "status": "affected"
      },
      {
        "version": ">= 2.0.0b1, < 2.5.0",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "pydantic",
    "product": "pydantic-ai-slim",
    "versions": [
      {
        "version": ">= 1.88.0, < 1.107.1",
        "status": "affected"
      },
      {
        "version": ">= 2.0.0b1, < 2.5.0",
        "status": "affected"
      }
    ]
  }
]

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