OpenAI to Revoke and Rotate macOS Signing Certificates After Axios Attack

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Summary

After a GitHub Actions workflow ran compromised Axios 1.14.1, OpenAI began rotating macOS app signing certificates as a precaution. It reported no evidence of misuse or data exposure and required users to update by May 8, 2026.

Key points

  • On March 31, 2026, an OpenAI GitHub Actions workflow executed compromised Axios package version 1.14.1 and had access to certificates used to sign its macOS apps.
  • OpenAI and a third-party incident response firm found no evidence that the certificates were exposed or misused, or that user data, systems, intellectual property, or software were compromised.
  • OpenAI is rotating the certificates as a precaution and said the old certificate would be fully revoked on May 8, 2026; older app versions may then be blocked by macOS.
  • The affected macOS apps include ChatGPT Desktop, Codex, Codex CLI, and Atlas. OpenAI said its web services and iOS, Android, Windows, and Linux apps were unaffected.
  • Researchers linked the Axios supply-chain attack to UNC1069, which allegedly used social engineering to gain access to a maintainer account and publish malicious npm packages that install a cross-platform RAT.
  • OpenAI advised users to update through in-app features or official download pages and avoid software links from emails, ads, or third-party sites.

Article Details

Event Type
Supply-chain attack involving a compromised Axios package executed in a GitHub Actions workflow, prompting OpenAI to rotate its macOS code-signing certificates.
Impact
OpenAI said its investigation found no evidence of certificate misuse, user-data exposure, system or intellectual-property compromise, or altered software. The certificate was treated as potentially compromised out of caution. macOS users must update OpenAI apps to versions signed with the new certificate before the old certificate is fully revoked on May 8, 2026; other platforms and web services were reported unaffected.

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