HIGHNuGet →
MessagePack's LZ4 decompression may fail with AccessViolationException after dereferencing memory from bad input
MessagePack's LZ4 decompression may fail with AccessViolationException after dereferencing memory from bad input
Affected packages
- MessagePack— before 2.5.301
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/MessagePack-CSharp/MessagePack-CSharp/security/advisories/GHSA-hv8m-jj95-wg3x
- https://nvd.nist.gov/vuln/detail/CVE-2026-48109
- https://github.com/MessagePack-CSharp/MessagePack-CSharp
Structured record: https://osv.dev/vulnerability/GHSA-hv8m-jj95-wg3x
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