A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. (CVE-2026-103222)
Description
A vulnerability in Blosc C-Blosc2 up to version 3.3.2 affects the blosclz_decompress function in the blosc/blosclz.c component. This vulnerability can lead to an integer overflow when manipulated, potentially impacting confidentiality, integrity, and availability. The attack requires high complexity and no privileges or user interaction. Upgrading to version 3.3.3 resolves this issue.
CVSS v3.1
Score 5.6medium
Affected software
pkg:deb/ubuntu/c-blosc2?arch=source&distro=noblepkg:deb/ubuntu/c-blosc2?arch=source&distro=stonkingpkg:deb/ubuntu/c-blosc2?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103222 identifies an integer overflow vulnerability in the blosclz_decompress function of the blosc/blosclz.c component in Blosc C-Blosc2 versions up to 3.3.2. The flaw can be triggered remotely and may lead to impacts on confidentiality, integrity, and availability. The attack complexity is high, and exploitation is difficult. The issue is fixed in version 3.3.3 with patch fe2964d114d97847f56570a0ab2be2c57ccbeedc.
Potential Impact
Successful exploitation of this vulnerability could result in partial loss of confidentiality, integrity, and availability of the affected system due to integer overflow during decompression. However, the attack complexity is high and no known exploits are reported in the wild, reducing immediate risk.
Mitigation Recommendations
Upgrade the affected Blosc C-Blosc2 component to version 3.3.3 or later, which contains the official fix for this vulnerability. No other mitigation actions are specified or required.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-103222
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f4f82cdf04f65665760b
Added to database: 10/17/2026, 22:21:44 UTC
Last enriched: 10/17/2026, 22:43:54 UTC
Last updated: 10/17/2026, 22:43:55 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.