libheif heap overflow and SSO misconfiguration expose OpenAI employee accounts
ccerrato147 · x · 2026-09-18
Same disclosure as the companion post: a heap overflow in libheif — a library nobody patches because the fix was never labeled a security fix — combined with an SSO misconfiguration in OpenAI's identity layer. Uploading a malicious image to the community forum yields RCE, potentially riding OpenAI's broken SSO straight into employee ChatGPT and Codex accounts.
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