CVE-2026-103222 PUBLISHED

Blosc C-Blosc2 blosclz Decompression blosclz.c blosclz_decompress integer overflow

Assigner: VulDB
Reserved: 30.09.2026 Published: 30.09.2026 Updated: 30.09.2026

A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. This impacts the function blosclz_decompress of the file blosc/blosclz.c of the component blosclz Decompression. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. Upgrading to version 3.3.3 will fix this issue. This patch is called fe2964d114d97847f56570a0ab2be2c57ccbeedc. The affected component should be upgraded.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
CVSS Score: 6.3

Product Status

Vendor Blosc
Product C-Blosc2
Versions
  • Version 3.3.0 is affected
  • Version 3.3.1 is affected
  • Version 3.3.2 is affected
  • Version 3.3.3 is unaffected

Credits

  • zzxzzb (VulDB User) reporter

References

Problem Types

  • Integer Overflow CWE
  • Numeric Error CWE