CVE-2026-103222

medium

Description

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.

References

https://vuldb.com/vuln/411905/cti

https://vuldb.com/vuln/411905

https://vuldb.com/submit/954976

https://vuldb.com/cve/CVE-2026-103222

https://github.com/Blosc/c-blosc2/releases/tag/v3.3.3

https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc

https://github.com/Blosc/c-blosc2/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-89956

Details

Source: Mitre, NVD

Published: 2026-09-30

Updated: 2026-09-30

Risk Information

CVSS v2

Base Score: 5.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 5.6

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Severity: Medium

CVSS v4

Base Score: 6.3

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

Severity: Medium

EPSS

EPSS: 0.00447