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Public proof of conceptFix available

CVE-2021-34620

A public proof of concept exists; no exploitation attested.

  • Published2021-07-07
  • Fixed in3.6.67
  • WeaknessCWE-352 · CWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The WP Fluent Forms plugin < 3.6.67 for WordPress is vulnerable to Cross-Site Request Forgery leading to stored Cross-Site Scripting and limited Privilege Escalation due to a missing nonce check in the access control function for administrative AJAX actions

Timeline

dates in UTC
  1. 2021-07-0713:15CVE publishedNVD

Versions per branch

NVD · CISA-ADP
Fluentforms contact form
BranchAffectedFixed in
3.6< 3.6.673.6.67

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As Wordfence, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • WP Manage Ninja WP Fluent Forms
    Affected
    • ≥ 3.6.67, < 3.6.67fixed in 3.6.67custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-07-07

Fix

  1. Update Fluentforms contact form to 3.6.67

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-10-15
  • CISA-ADPCVSS 3.18.82024-10-15
  • NVDCVSS 3.18.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • CNAweakness (CWE)CWE-352, CWE-79known since 2026-10-23
  • NVDweakness (CWE)CWE-352read 2026-10-23
  • FIRST EPSSEPSS score2.6 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-07-07
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-pp6p-gh63-62xr

Frequently asked questions

What is CVE-2021-34620?

The WP Fluent Forms plugin < 3.6.67 for WordPress is vulnerable to Cross-Site Request Forgery leading to stored Cross-Site Scripting and limited Privilege Escalation due to a missing nonce check in the access control function for administrative AJAX actions

Is CVE-2021-34620 actively exploited?

A proof-of-concept exploit exists for CVE-2021-34620, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2021-34620?

CVE-2021-34620 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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