CVE-2024-0621: The Simple Share Buttons Adder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin set

Q: How do I fix CVE-2024-0621?

simple share buttons adder: upgrade to 8.4.12. Exact commands for each OS are on this page.

Q: Is CVE-2024-0621 being exploited?

CVE-2024-0621 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-2024-0621 affect?

CVE-2024-0621 affects simple share buttons adder. Severity is medium (CVSS 4.4). The Simple Share Buttons Adder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 8.4.11 due to insufficient input sanitization and output escaping. This makes it possi

Q: How urgent is CVE-2024-0621?

Priority 26/100. No elevated risk signals yet.

Routine

MEDIUM 4.4UPGRADE

CVE-2024-0621 is a medium-severity flaw (CVSS 4.4) affecting simple share buttons adder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Simple Share Buttons Adder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 8.4.11 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-sit

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-02-29
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: simplesharebuttons

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

Am I affected?

Timeline

2024-02-29 01:43 UTCPublished CVE record published
2026-06-17 06:53 UTCUpdated Record last modified

simplesharebuttons simple share buttons adder UPGRADE

Affected: < 8.4.12

Fixed in: 8.4.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy simple-share-buttons-adder || rpm -q simple-share-buttons-adder || simple-share-buttons-adder --version

2. UPGRADE to 8.4.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade simple-share-buttons-adder

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade simple-share-buttons-adder

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-2024-0621?

simple share buttons adder: upgrade to 8.4.12. Exact commands for each OS are on this page.

Is CVE-2024-0621 being exploited?

CVE-2024-0621 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-2024-0621 affect?

CVE-2024-0621 affects simple share buttons adder. Severity is medium (CVSS 4.4). The Simple Share Buttons Adder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 8.4.11 due to insufficient input sanitization and output escaping. This makes it possi

How urgent is CVE-2024-0621?

Priority 26/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2024-4094 MEDIUM 5.4 UPGRADE The Simple Share Buttons Adder WordPress plugin before 8.5.1 does not sanitise and escape some of its settings

References

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