CVE-2025-59956: AgentAPI Client-Side DNS Rebinding Data Exfiltration Flaw
Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerabilityData leak
AgentAPI is susceptible to a client-side DNS rebinding attack when hosted over plain HTTP on localhost, allowing data exfiltration of local message history. A patch has been issued in version 0.4.0.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
Details
- type
- Attack on AIAn AI model, agent or AI-powered product was the thing exploited, abused or leaked.
- categories
- Infrastructure vulnerabilityprimaryCVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
- Data leakTraining data, chat logs, system prompts, model weights or other AI-system data exposed.
- Infrastructure vulnerabilityprimary
- mitre atlas
- no technique for these categoriesBoth rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
- severity
- 2 · Disclosed vulnerabilityCVE or vendor advisory, patched or patchable, no confirmed exploitation.
- targets
- Framework / tooling
- products
- AgentAPI, Claude Code, Aider, Codex, Gemini
- incident date
- 30 Sep 2025
- first reported
- 30 Sep 2025
- origin
- NVDVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- classifier confidence
- 0.95 · published at or above 0.80; see the methodology
- tags
- CVE-2025-59956 · dns_rebinding · data_leak
- record
- created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z · json
Sources · 1
- 2025-09-30CVE-2025-59956: AgentAPI is an HTTP API for Claude Code, Goose, Aider, Gemini, Amp, and Codex.NVD · nvd.nist.gov/vuln/detail/CVE-2025-59956
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