PatchTheCVECVE-2023-0440: Observable Discrepancy in GitHub repository healthchecks/healthchecks prior to v2.6.
CVE-2023-0440 is a medium-severity flaw (CVSS 5.3) affecting healthchecks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Observable Discrepancy in GitHub repository healthchecks/healthchecks prior to v2.6.
Why this priority
- Public exploit reference
- 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 | 0.6% (top 53%) |
| CISA exploited list | No |
| Weakness | CWE-203 |
| Published | 2023-01-23 |
| 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-2023-0440?
healthchecks: upgrade to 2.6. Exact commands for each OS are on this page.
Is CVE-2023-0440 being exploited?
CVE-2023-0440 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-2023-0440 affect?
CVE-2023-0440 affects healthchecks. Severity is medium (CVSS 5.3). Observable Discrepancy in GitHub repository healthchecks/healthchecks prior to v2.6.
How urgent is CVE-2023-0440?
Priority 40/100. Public exploit reference; Remotely exploitable, no login, no user action