CVE-2026-88359 | BDVDB-2026-378663 Detail

Description#

libfyaml 0.9.6 contains a stack exhaustion vulnerability in fy_atom_iter_format(). When processing a specially crafted YAML document containing a very large literal or folded block scalar, the function repeatedly grows an internal buffer using alloca() inside a loop. The allocated stack memory is not released until the function returns, causing cumulative stack growth that can exceed the process stack limit and result in SIGSEGV and denial of service.

Impact#

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Exploit#

History#

1. Version 12026-09-24Record published in the CVE List.
2. Version 22026-09-25Most recent update recorded in the CVE List.