CVE-2021-42080

Reflected XSS vulnerability in OSNEXUS QuantaStor before 6.0.0.355

An attacker is able to launch a Reflected XSS attack using a crafted URL. POC: Visit the following URL https://<IPADDRESS>:8153/qstorapi/echo?inputMessage=<img%20src=x%20onerror=alert(document.cookie)>

Affected

OSNEXUS · QuantaStor

CVSS v3.1 NVD

7.4 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

EPSS

0.69% chance of exploitation in the next 30 days, 52nd percentile

Published

2023-07-10

Updated

2025-09-22

Proof-of-concept exploits (1)

• https://csirt.divd.nl/CVE-2021-42080

Security advisories

• https://www.wbsec.nl/osnexus
• https://www.osnexus.com/products/software-defined-storage

References

• CVE Record
• NVD entry