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CVE-2021-4396

Rucy <= 0.4.4 - Cross-Site Request Forgery Bypass

MEDIUM
4.3
CVSS Score
Published: July 1, 2023 at 05:33 AM UTC
Updated: June 17, 2026 at 04:19 AM UTC
2 products affected across 2 vendorsRucyRucy

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

The Rucy plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 0.4.4. This is due to missing or incorrect nonce validation on the save_rc_post_meta() function. This makes it possible for unauthenticated attackers to save post meta via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Rucy· Rucy Projectwordpress-plugin
95%
v ≤ 0.4.4
Rucy· Gips Nitawordpress-plugin
60%
v ≤ 0.4.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (9)

Not Applicable
Source: [email protected]
https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
Not Applicable
Source: [email protected]
https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
Not Applicable
Source: [email protected]
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
Not Applicable
Source: [email protected]
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
Not Applicable
Source: [email protected]
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
Not Applicable
Source: [email protected]
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
Third Party Advisory
Source: [email protected]
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
Patch
Source: [email protected]
https://plugins.trac.wordpress.org/browser/rucy/trunk/inc/class-rucy-editor.php#L237

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMWordfence
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-352

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