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CVE-2026-44375

Nerdbank.MessagePack: Attacker-controlled stackalloc in DateTime decoding causes process-terminating StackOverflowException PUBLISHED

Description (CNA)

Nerdbank.MessagePack is a NativeAOT-compatible MessagePack serialization library. Prior to 1.1.62, Nerdbank.MessagePack contains an uncontrolled stack allocation vulnerability in DateTime decoding. A malicious MessagePack payload can declare an oversized timestamp extension length, causing the reader to allocate an attacker-controlled number of bytes on the stack. This can trigger a StackOverflowException, which is not catchable by user code and terminates the process. This vulnerability is fixed in 1.1.62.

Affected (CNA)

Vendor / productVersions
AArnott / Nerdbank.MessagePackaffected < 1.1.62

CWE

CWE-789

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.