radare2 maintainer gets 372 Mythos bug reports from Anthropic
Original title: Myths in R2Land
He reports no false positives in that batch and says about 200 bugs were fixed in four days.
After Anthropic opened its OSS Scanner to open-source projects, the radare2 maintainer received 372 reports with reproducers, ASan logs, CWE details and proposed patches. The issues included out-of-bounds access, format strings, command injection, sandbox escapes, path traversal, information leaks and authentication bypasses. He says patches often treated symptoms, and that about 200 findings were fixed in four days with help from coding agents. The project’s guideline is to disclose and fix known vulnerabilities within 24 hours.
Unconfirmed: The claim of no false positives, and that Mythos found more than an earlier review, is the maintainer’s alone.
- The mailed batch contained 372 structured reports with reproducers and crash logs.
- Bug classes included sandbox escape, path traversal and authentication bypass.
- About 200 findings were fixed in four days; disclosure target is under 24 hours.
- Anthropic’s proposed patches often missed root causes and nearby similar bugs.
Impact: memory bugs, sandbox escape, auth bypass and data leaks
| Product | Affected |
|---|---|
| radare2 | — |
Indicators of compromise
auto-extracted · verify before use · export allAll| Type | Indicator | Context |
|---|---|---|
| sha1 | 3f7b70a89ef13e367b63791c21782ad57edbca4b | Location: libr/main/rapatch2.c:58 in rapatch_file() Commit: 3f7b70a89ef13e367b63791c21782ad57edbca4b ================================== With this header, it was |
From the original article
5 min read at trufae.substack.com
Mythos made headlines with old bugs in OpenBSD, FreeBSD and FFmpeg. Mozilla’s AI-assisted hardening work started in February 2026, and Firefox v150 shipped 271 Mythos fixes on April 21 . That’s roughly two months of work of over 100 developers .
By trufae.substack.com via freddyb · trufae.substack.com
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.