CVE-2026-103222
Blosc C-Blosc2 blosclz Decompression blosclz.c blosclz_decompress integer overflow
CVSS Score
5.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-190 CWE-189 |
| Vendor | blosc |
| Product | c-blosc2 |
| Published | Sep 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Blosc / C-Blosc2
3.3.0 3.3.1 3.3.2
References
vuldb.com: https://vuldb.com/vuln/411905 vuldb.com: https://vuldb.com/vuln/411905/cti vuldb.com: https://vuldb.com/cve/CVE-2026-103222 vuldb.com: https://vuldb.com/submit/954976 github.com: https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc github.com: https://github.com/Blosc/c-blosc2/releases/tag/v3.3.3 github.com: https://github.com/Blosc/c-blosc2/
Credits
🔍 zzxzzb (VulDB User)