Sereal::Decoder versions before 5.005 for Perl allow heap out-of-bounds read via crafted input
Sereal::Decoder versions before 5.005 for Perl allow heap out-of-bounds read via crafted input. In Perl/Decoder/srl_decoder.c, srl_read_object() and srl_read_hash() process a COPY tag, a back-reference whose target byte the decoder re-decodes as a fresh tag. When that target byte matches the SHORT_BINARY pattern (an i…
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Published 2026-05-31T19:43:22.054Z. Updated 2026-06-01T18:42:31.783Z.