PatchTheCVECVE-2021-23495: The package karma before 6.3.16 are vulnerable to Open Redirect due to missing validation of the return_url qu
CVE-2021-23495 is a medium-severity flaw (CVSS 5.4) affecting karma. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The package karma before 6.3.16 are vulnerable to Open Redirect due to missing validation of the return_url query parameter.
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 | None |
| User interaction | Required |
| EPSS exploit chance | 0.9% (top 41%) |
| CISA exploited list | No |
| Weakness | CWE-601 |
| Published | 2022-02-25 |
| 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-2021-23495?
karma: upgrade to 6.3.16. Exact commands for each OS are on this page.
Is CVE-2021-23495 being exploited?
CVE-2021-23495 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-2021-23495 affect?
CVE-2021-23495 affects karma. Severity is medium (CVSS 5.4). The package karma before 6.3.16 are vulnerable to Open Redirect due to missing validation of the return_url query parameter.
How urgent is CVE-2021-23495?
Priority 34/100. No elevated risk signals yet.