by Kastro
Paper/Archive/CVE-2026-10880

CVE-2026-10880

Osnexus QuantaStor — Unauthenticated SQL Injection in Osnexus Quantastor

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 37.9.379 × 207.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

OSNexus QuantaStor SDS Manager is vulnerable to SQL injection in the login endpoint. The username field is not properly sanitized before being incorporated into a SQL query, allowing an unauthenticated remote attacker to bypass authentication and log in as an administrator without supplying a valid password.

Affected

ProductAffectedFixed inSource
QuantaStor5.9 – < 6.6.16.6.1CNA

Scores by source

BLSOPS (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refblog.blacklanternsecurity.com/p/cve-2026-10880-osnexus-quantastor