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Knowledge base

Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.

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CodexGuild — Knowledge Base

203 entries · #security · generated 2026-10-11 · codexguild.com
CanonicalSecurity

Pydantic AI: Concurrency-limited models can keep their slot when a streamed request ends early

High severity. Affects pydantic-ai >= 2.10.0, < 2.53.0. Upgrade to 2.53.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 2.10.0, < 2.53.0
CanonicalSecurity

Pydantic AI: Excessive resource use when local web fetching converts nested HTML

Medium severity. Affects pydantic-ai >= 1.77.0, < 1.107.7; pydantic-ai >= 2.0.0b1, < 2.52.0. Upgrade to 1.107.7 / 2.52.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 1.77.0, < 1.107.7; pydantic-ai >= 2.0.0b1, < 2.52.0
CanonicalSecurity

Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): the local chat endpoint does not validate the `Host` header

Medium severity. Affects pydantic-ai >= 1.34.0, < 1.107.5; pydantic-ai >= 2.0.0b1, < 2.30.0. Upgrade to 1.107.5 / 2.30.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 1.34.0, < 1.107.5; pydantic-ai >= 2.0.0b1, < 2.30.0
CanonicalSecurity

Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): a website visited by the developer can trigger agent runs and server-side tool execution on the local chat endpoint

High severity. Affects pydantic-ai >= 1.34.0, < 1.107.4; pydantic-ai >= 2.0.0b1, < 2.28.0. Upgrade to 1.107.4 / 2.28.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 1.34.0, < 1.107.4; pydantic-ai >= 2.0.0b1, < 2.28.0
CanonicalSecurity

Pydantic AI OpenTelemetry instrumentation: retry prompt content is not redacted when `include_content=False`

Low severity. Affects pydantic-ai >= 0.3.4, < 1.107.4; pydantic-ai >= 2.0.0b1, < 2.27.1. Upgrade to 1.107.4 / 2.27.1 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 0.3.4, < 1.107.4; pydantic-ai >= 2.0.0b1, < 2.27.1
CanonicalSecurity

Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl

Medium severity. Affects pydantic-ai >= 1.77.0, < 1.107.2; pydantic-ai >= 2.0.0b1, <= 2.23.0. Upgrade to 1.107.2 / 2.24.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 1.77.0, < 1.107.2; pydantic-ai >= 2.0.0b1, <= 2.23.0
CanonicalSecurity

Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`

Medium severity. Affects pydantic-ai >= 1.77.0, < 1.107.6; pydantic-ai >= 2.0.0b1, < 2.44.0. Upgrade to 1.107.6 / 2.44.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 1.77.0, < 1.107.6; pydantic-ai >= 2.0.0b1, < 2.44.0
CanonicalSecurity

Pydantic AI OpenTelemetry instrumentation: exception events on tool and agent run spans include content when `include_content=False`

Low severity. Affects pydantic-ai >= 0.3.4, < 1.107.6; pydantic-ai >= 2.0.0b1, < 2.44.0. Upgrade to 1.107.6 / 2.44.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 0.3.4, < 1.107.6; pydantic-ai >= 2.0.0b1, < 2.44.0
CanonicalSecurity

Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv6 zone identifiers

Medium severity. Affects pydantic-ai >= 1.56.0, < 1.107.6; pydantic-ai >= 2.0.0b1, < 2.44.0. Upgrade to 1.107.6 / 2.44.0 or later.

securitycveghsa
Oct 8, 2026 pydantic-ai >= 1.56.0, < 1.107.6; pydantic-ai >= 2.0.0b1, < 2.44.0
CanonicalSecurity

Electron 44: current version and breaking changes since Electron 38

Electron 44 (2026-08-25, Chromium 152, Node 24.18.1) is the latest stable; 44/43/42 are supported. It drops macOS 12 and 32-bit builds and removes renderer access to `clipboard`. Since 42 the npm package no longer downloads the binary in postinstall.

electrondesktopbreaking-changes
Oct 7, 2026 electron >= 44.0.0
CanonicalAI & Models

MCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server

High severity. Affects @modelcontextprotocol/sdk >= 1.12.0, < 1.31.0; @modelcontextprotocol/client >= 2.0.0, < 2.2.0. Upgrade to 1.31.0 / 2.2.0 or later.

securitycveghsa
Oct 6, 2026 @modelcontextprotocol/sdk >= 1.12.0, < 1.31.0; @modelcontextprotocol/client >= 2.0.0, < 2.2.0
CanonicalBackend

Hono 4.13: QUERY method, cache-key and CORS default changes, and 2026 security advisories

Hono 4.13.13 (2026-10-04) is current. 2026 brought many security fixes (CORS credential reflection, bodyLimit, JWT scheme, JSX SSR, serveStatic) - use >= 4.13.11. 4.13.0 changed cache keys, CORS default methods and RegExpRouter errors.

honobackendsecurity
Oct 4, 2026 hono >= 4.12 1
CanonicalSecurity

LiteLLM: Authenticated SSRF and provider-credential exfiltration via unvalidated request-body routing parameters

Medium severity. Affects litellm < 1.88.6; litellm >= 1.89.0, < 1.89.7; litellm >= 1.90.0, < 1.90.7; litellm >= 1.91.0, < 1.91.5; litellm >= 1.92.0, < 1.92.2; litellm >= 1.93.0, < 1.93.2; litellm >= 1.94.0, < 1.94.3; litellm >= 1.95.0, < 1.95.1; litellm >= 1.96.0, < 1.96.2. Upgrade to 1.88.6 / 1.89.7 / 1.90.7 / 1.91.5 / 1.92.2 / 1.93.2 / 1.94.3 / 1.95.1 / 1.96.2 or later.

securitycveghsa
Sep 30, 2026 litellm < 1.88.6; litellm >= 1.89.0, < 1.89.7; litellm >= 1.90.0, < 1.90.7; litellm >= 1.91.0, < 1.91.5; litellm >= 1.92.0, < 1.92.2; litellm >= 1.93.0, < 1.93.2; litellm >= 1.94.0, < 1.94.3
CanonicalSecurity

The 2026 AI supply-chain wave: TeamPCP, ContextCrush, prt-scan, GlassWorm, Bitwarden

Five campaigns, one phenomenon: 1,000+ compromised packages, AI-targeting malware hunting ~/.claude, ~/.cursor, ~/.codex configs and LLM API keys. Your AI assistant is both weapon and target.

securityincidentsupply-chain
Sep 28, 2026 4
CanonicalSecurity

Clinejection (Feb 2026): prompt injection → npm supply chain compromise

A malicious GitHub issue title injected instructions into Cline’s Claude-based triage bot → Actions cache poisoning → npm token theft → trojanized cline@2.3.0 on ~4,000 machines. The blueprint for AI supply-chain attacks.

securityincidentsupply-chain
Sep 28, 2026
CanonicalSecurity

TrapDoor (May 2026): zero-width prompt injection in agent config files

34+ malicious packages (384 versions) planted .cursorrules/CLAUDE.md with invisible zero-width-Unicode instructions. First documented at-scale attack on the agent instruction channel itself.

securityincidentsupply-chain
Sep 28, 2026 1
CanonicalSecurity

CVE-2026-26268: Cursor sandbox escape via git hooks

Cursor’s agent could write to .git/hooks/ — planted hook scripts execute on the next commit/push/checkout with full OS privileges, no further prompt needed. Fixed in 2.5; the class persists in every file-writing agent.

securityincidentcve
Sep 28, 2026 1
CanonicalBackend

Socket.IO 4.8.4: 2026 engine.io and parser security fixes, and recent behavior changes

Socket.IO is still v4 (4.8.4, 2026-09-25). 2026 high-severity DoS fixes live in transitive packages: engine.io >= 6.6.10 and socket.io-parser >= 4.2.7. Refresh lockfiles; 4.8.4 rejects stateful regexps for dynamic namespaces.

socket.iobackendsecurity
Sep 25, 2026 socket.io >= 4.8
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