CVE-2021-4426

CVE-2021-4426 is a medium-severity vulnerability in Codesupply Absolute Reviews with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

• Severity: Medium (CVSS 3.x base score 4.3)
• EPSS exploit prediction: 0% (39th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-352
• Affected product: Codesupply Absolute Reviews
• Published: 2023-07-12
• Last modified: 2026-06-17

Description

The Absolute Reviews plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.8. This is due to missing or incorrect nonce validation on the metabox_review_save() function. This makes it possible for unauthenticated attackers to save meta tags via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Frequently asked questions

What is CVE-2021-4426?

The Absolute Reviews plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.0.8. This is due to missing or incorrect nonce validation on the metabox_review_save() function. This makes it possible for unauthenticated attackers to save meta tags via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

How severe is CVE-2021-4426?

CVE-2021-4426 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-4426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4426?

CVE-2021-4426 affects Codesupply Absolute Reviews. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4426?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-4426 published?

CVE-2021-4426 was published on 2023-07-12 and last updated on 2026-06-17.

References

• https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
• https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
• https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2548729%40absolute-reviews&new=2548729%40absolute-reviews&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ec1ee47d-020c-482d-ad6f-663d78e624b8?source=cve

Affected products (1)

• cpe:2.3:a:codesupply:absolute_reviews:*:*:*:*:*:wordpress:*:*

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