CVE-2021-24893: The Stars Rating WordPress plugin before 3.5.1 does not validate the submitted rating, allowing submission of

Q: How do I fix CVE-2021-24893?

stars rating: upgrade to 3.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-24893 being exploited?

CVE-2021-24893 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24893 affect?

CVE-2021-24893 affects stars rating. Severity is high (CVSS 7.5). The Stars Rating WordPress plugin before 3.5.1 does not validate the submitted rating, allowing submission of long integer, causing a Denial of Service in the comments section, or pending comment dashboard depending if the user sent it as u

Q: How urgent is CVE-2021-24893?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-24893 is a high-severity flaw (CVSS 7.5) affecting stars rating. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Stars Rating WordPress plugin before 3.5.1 does not validate the submitted rating, allowing submission of long integer, causing a Denial of Service in the comments section, or pending comment dashboard depending if the user sent it as unauthenticated or authenticated.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-400, CWE-20
Published	2022-01-03
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: stars rating project

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

Am I affected?

Timeline

2022-01-03 13:15 UTCPublished CVE record published
2026-06-17 03:41 UTCUpdated Record last modified

stars rating project stars rating UPGRADE

Affected: < 3.5.1

Fixed in: 3.5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy stars-rating || rpm -q stars-rating || stars-rating --version

2. UPGRADE to 3.5.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade stars-rating

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stars-rating

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-2021-24893?

stars rating: upgrade to 3.5.1. Exact commands for each OS are on this page.

Is CVE-2021-24893 being exploited?

CVE-2021-24893 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-2021-24893 affect?

CVE-2021-24893 affects stars rating. Severity is high (CVSS 7.5). The Stars Rating WordPress plugin before 3.5.1 does not validate the submitted rating, allowing submission of long integer, causing a Denial of Service in the comments section, or pending comment dashboard depending if the user sent it as u

How urgent is CVE-2021-24893?

Priority 55/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

References

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