GHSA-5jg4-p4qw-cgfr: @stablelib/cbor: Stack exhaustion Denial of Service via deeply nested CBOR arrays, maps, or tags

April 4, 2026 (updated April 7, 2026)

@stablelib/cbor decodes nested CBOR structures recursively and does not enforce a maximum nesting depth. A sufficiently deep attacker-controlled CBOR payload can therefore crash decoding with RangeError: Maximum call stack size exceeded.

References

github.com/StableLib/stablelib
github.com/StableLib/stablelib/commit/0149e18d9d4736e22c257744ca945ebce7899a01
github.com/StableLib/stablelib/security/advisories/GHSA-5jg4-p4qw-cgfr
github.com/advisories/GHSA-5jg4-p4qw-cgfr

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