PatchTheCVECVE-2023-5411: The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing
CVE-2023-5411 is a medium-severity flaw (CVSS 4.3) affecting funnelforms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fnsf_af2_save_post function in versions up to, and including, 3.4. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to modify certain post values. Note that the extent of modification is limited due to fixed values passed to the wp_update_post function.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 67%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2023-11-22 |
| 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-2023-5411?
funnelforms: upgrade to newer than 3.4. Exact commands for each OS are on this page.
Is CVE-2023-5411 being exploited?
CVE-2023-5411 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-2023-5411 affect?
CVE-2023-5411 affects funnelforms. Severity is medium (CVSS 4.3). The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fnsf_af2_save_post function in versions up to, and including, 3.4. This makes it possible for authenticate
How urgent is CVE-2023-5411?
Priority 23/100. No elevated risk signals yet.
Software pages
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