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

Q: How do I fix CVE-2023-1373?

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

Q: Is CVE-2023-1373 being exploited?

CVE-2023-1373 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-2023-1373 affect?

CVE-2023-1373 affects w4 post list. Severity is medium (CVSS 6.1). The W4 Post List WordPress plugin before 2.4.6 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

Q: How urgent is CVE-2023-1373?

Priority 36/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2023-1373 is a medium-severity flaw (CVSS 6.1) 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 escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
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 05:27 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-2023-1373?

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

Is CVE-2023-1373 being exploited?

CVE-2023-1373 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-2023-1373 affect?

CVE-2023-1373 affects w4 post list. Severity is medium (CVSS 6.1). The W4 Post List WordPress plugin before 2.4.6 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting

How urgent is CVE-2023-1373?

Priority 36/100. Public exploit reference

Software pages

WordPress vulnerabilities

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References

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