PatchTheCVECVE-2024-44821: ZZCMS 2023 contains a vulnerability in the captcha reuse logic located in /inc/function.php
CVE-2024-44821 is a medium-severity flaw (CVSS 5.3) affecting zzcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
ZZCMS 2023 contains a vulnerability in the captcha reuse logic located in /inc/function.php. The checkyzm function does not properly refresh the captcha value after a failed validation attempt. As a result, an attacker can exploit this flaw by repeatedly submitting the same incorrect captcha response, allowing them to capture the correct captcha value through error messages.
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 | 0.4% (top 64%) |
| CISA exploited list | No |
| Weakness | CWE-287 |
| Published | 2024-09-04 |
| 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-2024-44821?
zzcms: upgrade to newer than 2023. Exact commands for each OS are on this page.
Is CVE-2024-44821 being exploited?
CVE-2024-44821 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-2024-44821 affect?
CVE-2024-44821 affects zzcms. Severity is medium (CVSS 5.3). ZZCMS 2023 contains a vulnerability in the captcha reuse logic located in /inc/function.php. The checkyzm function does not properly refresh the captcha value after a failed validation attempt. As a result, an attacker can exploit this flaw
How urgent is CVE-2024-44821?
Priority 38/100. Public exploit reference; Remotely exploitable, no login, no user action
Software pages
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