PatchTheCVECVE-2021-30174: RiyaLab CloudISO event item is added, special characters in specific field of time management page are not pro
CVE-2021-30174 is a medium-severity flaw (CVSS 5.4) affecting cloudiso. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
RiyaLab CloudISO event item is added, special characters in specific field of time management page are not properly filtered, which allow remote authenticated attackers can inject malicious JavaScript and carry out stored XSS (Stored Cross-site scripting) attacks.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.4 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.6% (top 52%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2021-05-11 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-30174?
cloudiso: upgrade to 2021.2a. Exact commands for each OS are on this page.
Is CVE-2021-30174 being exploited?
CVE-2021-30174 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-30174 affect?
CVE-2021-30174 affects cloudiso. Severity is medium (CVSS 5.4). RiyaLab CloudISO event item is added, special characters in specific field of time management page are not properly filtered, which allow remote authenticated attackers can inject malicious JavaScript and carry out stored XSS (Stored Cross-
How urgent is CVE-2021-30174?
Priority 31/100. No elevated risk signals yet.