CVE-2021-24164: ninjaforms ninja_forms Missing Authorization
Vulnerability summary
CVE-2021-24164 is a medium (CVSS 4.3) Missing Authorization vulnerability in ninjaforms ninja_forms. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 58.6% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 05-04-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
In the Ninja Forms Contact Form WordPress plugin before 3.4.34.1, low-level users, such as subscribers, were able to trigger the action, wp_ajax_nf_oauth, and retrieve the connection url needed to establish a connection. They could also retrieve the client_id for an already established OAuth connection.
CVSS metrics
3 scores · 2 sources · 2 versions- wordfenceSource4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
0.89%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
0.00 pp
From 0.89% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-862Missing AuthorizationThe product does not perform an authorization check when an actor attempts to access a resource or perform an action.
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Affected systems
Ninjaforms1 product
- ninja_forms< 3.4.34.1
Unknown1 product
- ninja forms contact form – the drag and drop form builder for wordpress≥ 3.4.34.1, < 3.4.34.1
Wordpress1 product
- ninja-forms< 3.4.34.1
3 vendors · 3 products
References
3 links- wpscan.com/vulnerability/dfa32afa-c6de-4237-a9f2-709843dcda89X Refsource CONFIRMExploitThird Party Advisory