What’s Vulnerable › Vulnerabilities

CVE-2023-0440: Observable Discrepancy in healthchecks/healthchecks

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-23 · updated 2026-06-17
• Weakness: CWE-203

Description

Observable Discrepancy in GitHub repository healthchecks/healthchecks prior to v2.6.

Affected products

• healthchecks/healthchecks: before 2.6 — fixed in 2.6

How to fix

Upgrade to a fixed version: healthchecks/healthchecks 2.6. Check the vendor advisory for mitigations.

References

• https://github.com/healthchecks/healthchecks/commit/359edbd2709e27b60687061a32e19322bc971c1f
• https://huntr.dev/bounties/208a096f-7986-4eed-8629-b7285348a686
• https://github.com/healthchecks/healthchecks/commit/359edbd2709e27b60687061a32e19322bc971c1f
• https://huntr.dev/bounties/208a096f-7986-4eed-8629-b7285348a686

Get alerted when CVE-2023-0440 or the next vulnerability affects your stack