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CVE-2021-24978: The OSMapper WordPress plugin through 2.1.5 contains an AJAX action to delete a plugin related post type named

40
This week
MEDIUM 5.3REMOTEUPGRADE

CVE-2021-24978 is a medium-severity flaw (CVSS 5.3) affecting osmapper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The OSMapper WordPress plugin through 2.1.5 contains an AJAX action to delete a plugin related post type named 'map' and is registered with the wp_ajax_nopriv prefix, making it available to unauthenticated users. There is no authorisation, CSRF and checks in place to ensure that the post to delete is a map one. As a result, unauthenticated user can delete arbitrary posts from the blog

Why this priority

  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score5.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.5% (top 55%)
CISA exploited listNo
WeaknessCWE-862, CWE-352
Published2022-03-28
Last modified2026-06-17
Publisher (CNA): WPScan · Vendor: b4after

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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

b4after osmapper UPGRADE
Affected: <= 2.1.5
Fixed in: newer than 2.1.5
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy osmapper || rpm -q osmapper || osmapper --version
2. UPGRADE to newer than 2.1.5 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade osmapper
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade osmapper
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-2021-24978?

osmapper: upgrade to newer than 2.1.5. Exact commands for each OS are on this page.

Is CVE-2021-24978 being exploited?

CVE-2021-24978 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-2021-24978 affect?

CVE-2021-24978 affects osmapper. Severity is medium (CVSS 5.3). The OSMapper WordPress plugin through 2.1.5 contains an AJAX action to delete a plugin related post type named 'map' and is registered with the wp_ajax_nopriv prefix, making it available to unauthenticated users. There is no authorisation,

How urgent is CVE-2021-24978?

Priority 40/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

References

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