CVE-2021-4434: The Social Warfare plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and includin

Q: How do I fix CVE-2021-4434?

social warfare: upgrade to 3.5.3. Exact commands for each OS are on this page.

Q: Is CVE-2021-4434 being exploited?

CVE-2021-4434 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-2021-4434 affect?

CVE-2021-4434 affects social warfare. Severity is critical (CVSS 10.0). The Social Warfare plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 3.5.2 via the 'swp_url' parameter. This allows attackers to execute code on the server.

Q: How urgent is CVE-2021-4434?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 10.0REMOTEUPGRADE

CVE-2021-4434 is a critical-severity flaw (CVSS 10.0) affecting social warfare. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Social Warfare plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 3.5.2 via the 'swp_url' parameter. This allows attackers to execute code on the server.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-94
Published	2024-01-17
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: warfareplugins

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

Am I affected?

Timeline

2024-01-17 09:15 UTCPublished CVE record published
2026-06-17 04:19 UTCUpdated Record last modified

warfareplugins social warfare UPGRADE

Affected: < 3.5.3

Fixed in: 3.5.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy social-warfare || rpm -q social-warfare || social-warfare --version

2. UPGRADE to 3.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade social-warfare

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade social-warfare

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-2021-4434?

social warfare: upgrade to 3.5.3. Exact commands for each OS are on this page.

Is CVE-2021-4434 being exploited?

CVE-2021-4434 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-2021-4434 affect?

CVE-2021-4434 affects social warfare. Severity is critical (CVSS 10.0). The Social Warfare plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 3.5.2 via the 'swp_url' parameter. This allows attackers to execute code on the server.

How urgent is CVE-2021-4434?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-4842 MEDIUM 6.4 UPGRADE The Social Sharing Plugin - Social Warfare plugin for WordPress is vulnerable to Stored Cross-Site Scripting v

References

← Back to latest CVEs