CVE-2022-3838: The WPUpper Share Buttons WordPress plugin through 3.42 does not sanitise and escape some of its settings, whi

Q: How do I fix CVE-2022-3838?

wpupper share buttons: upgrade to newer than 3.42. Exact commands for each OS are on this page.

Q: Is CVE-2022-3838 being exploited?

CVE-2022-3838 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-2022-3838 affect?

CVE-2022-3838 affects wpupper share buttons. Severity is medium (CVSS 4.8). The WPUpper Share Buttons WordPress plugin through 3.42 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html cap

Q: How urgent is CVE-2022-3838?

Priority 32/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2022-3838 is a medium-severity flaw (CVSS 4.8) affecting wpupper share buttons. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The WPUpper Share Buttons WordPress plugin through 3.42 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-12-05
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: wpupper share buttons project

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

Am I affected?

Timeline

2022-12-05 17:15 UTCPublished CVE record published
2026-06-17 05:00 UTCUpdated Record last modified

wpupper share buttons project wpupper share buttons UPGRADE

Affected: <= 3.42

Fixed in: newer than 3.42

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wpupper-share-buttons || rpm -q wpupper-share-buttons || wpupper-share-buttons --version

2. UPGRADE to newer than 3.42 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wpupper-share-buttons

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wpupper-share-buttons

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-2022-3838?

wpupper share buttons: upgrade to newer than 3.42. Exact commands for each OS are on this page.

Is CVE-2022-3838 being exploited?

CVE-2022-3838 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-2022-3838 affect?

CVE-2022-3838 affects wpupper share buttons. Severity is medium (CVSS 4.8). The WPUpper Share Buttons WordPress plugin through 3.42 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html cap

How urgent is CVE-2022-3838?

Priority 32/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2024-13883 MEDIUM 4.3 UPGRADE The WPUpper Share Buttons plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up

References

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