CVE-2023-0926: The Custom Permalinks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and

Q: How do I fix CVE-2023-0926?

custom permalinks: upgrade to 2.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-0926 being exploited?

CVE-2023-0926 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-2023-0926 affect?

CVE-2023-0926 affects custom permalinks. Severity is medium (CVSS 4.4). The Custom Permalinks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.0 due to insufficient input sanitization and output escaping on tag names. This allows authenticated users, with e

Q: How urgent is CVE-2023-0926?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 4.4UPGRADE

CVE-2023-0926 is a medium-severity flaw (CVSS 4.4) affecting custom permalinks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Custom Permalinks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.0 due to insufficient input sanitization and output escaping on tag names. This allows authenticated users, with editor-level permissions or greater to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, even when 'unfiltered_html' has been disabled.

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	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-08-24
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: samiahmedsiddiqui

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

Am I affected?

Timeline

2024-08-24 02:15 UTCPublished CVE record published
2026-06-17 05:26 UTCUpdated Record last modified

samiahmedsiddiqui custom permalinks UPGRADE

Affected: < 2.7.0

Fixed in: 2.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy custom-permalinks || rpm -q custom-permalinks || custom-permalinks --version

2. UPGRADE to 2.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade custom-permalinks

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade custom-permalinks

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-2023-0926?

custom permalinks: upgrade to 2.7.0. Exact commands for each OS are on this page.

Is CVE-2023-0926 being exploited?

CVE-2023-0926 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-2023-0926 affect?

CVE-2023-0926 affects custom permalinks. Severity is medium (CVSS 4.4). The Custom Permalinks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.0 due to insufficient input sanitization and output escaping on tag names. This allows authenticated users, with e

How urgent is CVE-2023-0926?

Priority 22/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

References

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