PatchTheCVECVE-2020-28898: In QED ResourceXpress through 4.9k, a large numeric or alphanumeric value submitted in specific URL parameters
CVE-2020-28898 is a medium-severity flaw (CVSS 5.3) affecting resourcexpress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In QED ResourceXpress through 4.9k, a large numeric or alphanumeric value submitted in specific URL parameters causes a server error in script execution due to insufficient input validation.
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.3% (top 30%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2021-04-15 |
| 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-2020-28898?
resourcexpress: upgrade to newer than 4.9k. Exact commands for each OS are on this page.
Is CVE-2020-28898 being exploited?
CVE-2020-28898 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-2020-28898 affect?
CVE-2020-28898 affects resourcexpress. Severity is medium (CVSS 5.3). In QED ResourceXpress through 4.9k, a large numeric or alphanumeric value submitted in specific URL parameters causes a server error in script execution due to insufficient input validation.
How urgent is CVE-2020-28898?
Priority 41/100. Remotely exploitable, no login, no user action