CVE-2021-24379: Comments Like Dislike < 1.1.4 - Add Like/Dislike Bypass

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-06-21 · updated 2026-06-17
Weakness: CWE-863

Description

The Comments Like Dislike WordPress plugin before 1.1.4 allows users to like/dislike posted comments, however does not prevent them from replaying the AJAX request to add a like. This allows any user (even unauthenticated) to add unlimited like/dislike to any comment. The plugin appears to have some Restriction modes, such as Cookie Restriction, IP Restrictions, Logged In User Restriction, however, they do not prevent such attack as they only check client side

Affected products

happy-coders Comments Like Dislike: before 1.1.4 — fixed in 1.1.4

How to fix

Upgrade to a fixed version: happy-coders Comments Like Dislike 1.1.4. Check the vendor advisory for mitigations.

References

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