CVE-2023-0374: The W4 Post List WordPress plugin before 2.4.6 does not validate and escape some of its block options before o

Q: How do I fix CVE-2023-0374?

w4 post list: upgrade to 2.4.6. Exact commands for each OS are on this page.

Q: Is CVE-2023-0374 being exploited?

CVE-2023-0374 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-2023-0374 affect?

CVE-2023-0374 affects w4 post list. Severity is medium (CVSS 5.4). The W4 Post List WordPress plugin before 2.4.6 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perfor

Q: How urgent is CVE-2023-0374?

Priority 34/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2023-0374 is a medium-severity flaw (CVSS 5.4) affecting w4 post list. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The W4 Post List WordPress plugin before 2.4.6 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-04-17
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: w4 post list project

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

Am I affected?

Timeline

2023-04-17 13:15 UTCPublished CVE record published
2026-06-17 05:25 UTCUpdated Record last modified

w4 post list project w4 post list UPGRADE

Affected: < 2.4.6

Fixed in: 2.4.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy w4-post-list || rpm -q w4-post-list || w4-post-list --version

2. UPGRADE to 2.4.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade w4-post-list

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade w4-post-list

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-2023-0374?

w4 post list: upgrade to 2.4.6. Exact commands for each OS are on this page.

Is CVE-2023-0374 being exploited?

CVE-2023-0374 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-2023-0374 affect?

CVE-2023-0374 affects w4 post list. Severity is medium (CVSS 5.4). The W4 Post List WordPress plugin before 2.4.6 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perfor

How urgent is CVE-2023-0374?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

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CVE-2023-1373 MEDIUM 6.1 UPGRADE The W4 Post List WordPress plugin before 2.4.6 does not escape some URLs before outputting them in attributes,
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References

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