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CVE-2021-24788: The Batch Cat WordPress plugin through 0.3 defines 3 custom AJAX actions, which both require authentication bu

43
This month
MEDIUM 6.5UPGRADE

CVE-2021-24788 is a medium-severity flaw (CVSS 6.5) affecting batch cat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Batch Cat WordPress plugin through 0.3 defines 3 custom AJAX actions, which both require authentication but are available for all roles. As a result, any authenticated user (including simple subscribers) can add/set/delete arbitrary categories to posts.

Why this priority

  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.9% (top 40%)
CISA exploited listNo
WeaknessCWE-863
Published2021-11-08
Last modified2026-06-17
Publisher (CNA): WPScan · Vendor: batch cat project

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

batch cat project batch cat UPGRADE
Affected: <= 0.3
Fixed in: newer than 0.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy batch-cat || rpm -q batch-cat || batch-cat --version
2. UPGRADE to newer than 0.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade batch-cat
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade batch-cat
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24788?

batch cat: upgrade to newer than 0.3. Exact commands for each OS are on this page.

Is CVE-2021-24788 being exploited?

CVE-2021-24788 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24788 affect?

CVE-2021-24788 affects batch cat. Severity is medium (CVSS 6.5). The Batch Cat WordPress plugin through 0.3 defines 3 custom AJAX actions, which both require authentication but are available for all roles. As a result, any authenticated user (including simple subscribers) can add/set/delete arbitrary cat

How urgent is CVE-2021-24788?

Priority 43/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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