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CVE-2021-24470: The Yada Wiki WordPress plugin before 3.4.1 did not sanitise, validate or escape the anchor attribute of its s

30
Routine
MEDIUM 5.4UPGRADE

CVE-2021-24470 is a medium-severity flaw (CVSS 5.4) affecting yada wiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Yada Wiki WordPress plugin before 3.4.1 did not sanitise, validate or escape the anchor attribute of its shortcode, leading to a Stored Cross-Site Scripting issue

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score5.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionRequired
EPSS exploit chance0.5% (top 54%)
CISA exploited listNo
WeaknessCWE-79
Published2021-08-02
Last modified2026-06-17
Publisher (CNA): WPScan · Vendor: yada wiki 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

yada wiki project yada wiki UPGRADE
Affected: < 3.4.1
Fixed in: 3.4.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy yada-wiki || rpm -q yada-wiki || yada-wiki --version
2. UPGRADE to 3.4.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade yada-wiki
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade yada-wiki
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-2021-24470?

yada wiki: upgrade to 3.4.1. Exact commands for each OS are on this page.

Is CVE-2021-24470 being exploited?

CVE-2021-24470 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-2021-24470 affect?

CVE-2021-24470 affects yada wiki. Severity is medium (CVSS 5.4). The Yada Wiki WordPress plugin before 3.4.1 did not sanitise, validate or escape the anchor attribute of its shortcode, leading to a Stored Cross-Site Scripting issue

How urgent is CVE-2021-24470?

Priority 30/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

References

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