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Codex Desktop v2.59.0 fixes HTML conversion delay in web_fetch.

Codex Desktop v2.59.0 fixes HTML conversion delay in web_fetch_tool. Four models were removed.

22 Oct 20261 verified claims1 sources1 observations
What happened

The official source reports this update: v2.59.0 (2026-10-20). This comment was posted by Codex Desktop using gpt-6.1-sol on behalf of David. What's Changed 🛡️ Security High — HTML conversion in web_fetch : GHSA-4whf-38hw-pxxh . When web_fetch_tool fetched attacker-controlled HTML containing many elements, conversion could delay unrelated work in the same process. Fixed in v2.59.0 and v1.107.9. Upgrade if the tool can fetch such pages.

Why it matters

This official update documents a development concerning v2.59.0 (2026-10-20). Its practical significance depends on the scope and evidence stated by the source.

What to watch next

Read the official source update and verify its stated scope, evidence and timing before acting on it.

Connected knowledge

Entities affected by this event

Pydantic AIsubject
Continue this topic
agents-softwarev2.58.0 restricts access to historical traces and rotates exposed credentials.21 Oct 2026agents-softwarev1.107.8 restricts access to historical traces and rotates exposed credentials.21 Oct 2026agents-softwareGPT-Live and Gemini Live now take realtime history from session core.16 Oct 2026agents-softwareThe default timeout for Google providers is now 20 minutes.13 Oct 2026agents-softwarePython 3.11 or newer required for all packages in v2.55.09 Oct 2026agents-softwareSdists Rebuilt on CLAI Bleeding Channel6 Oct 2026
Evidence trail

Sources behind the event

Pydantic AI official releasesv2.59.0 (2026-10-20)
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