CVE-2026-103222

EUVD-2026-89956
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulDBCNA
5.6 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 20.55%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
bloscc-blosc2
3.3.0
CNA
bloscc-blosc2
3.3.1
CNA
bloscc-blosc2
3.3.2
CNA
Debian logo
Debian Releases
Debian Product
Codename
c-blosc2
forky
3.4.1-1
fixed
sid
3.4.1-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
c-blosc2
jammy
dne
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
References
https://github.com/Blosc/c-blosc2/
https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc
https://github.com/Blosc/c-blosc2/releases/tag/v3.3.3
https://vuldb.com/cve/CVE-2026-103222
https://vuldb.com/submit/954976
https://vuldb.com/vuln/411905
https://vuldb.com/vuln/411905/cti