PatchTheCVECVE-2024-21495: Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness
CVE-2024-21495 is a medium-severity flaw (CVSS 6.5) affecting caddy-security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authent
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 48%) |
| CISA exploited list | No |
| Weakness | CWE-330 |
| Published | 2024-02-17 |
| 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-2024-21495?
caddy-security: upgrade to 1.0.42. Exact commands for each OS are on this page.
Is CVE-2024-21495 being exploited?
CVE-2024-21495 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-2024-21495 affect?
CVE-2024-21495 affects caddy-security. Severity is medium (CVSS 6.5). Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers c
How urgent is CVE-2024-21495?
Priority 41/100. Remotely exploitable, no login, no user action
Software pages
GitHub vulnerabilities · Caddy vulnerabilities
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