CVE-2023-0063: The WordPress Shortcodes WordPress plugin through 1.6.36 does not validate and escape some of its shortcode at

Q: How do I fix CVE-2023-0063?

wordpress shortcodes: upgrade to newer than 1.6.36. Exact commands for each OS are on this page.

Q: Is CVE-2023-0063 being exploited?

CVE-2023-0063 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-2023-0063 affect?

CVE-2023-0063 affects wordpress shortcodes. Severity is medium (CVSS 5.4). The WordPress Shortcodes WordPress plugin through 1.6.36 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor rol

Q: How urgent is CVE-2023-0063?

Priority 34/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2023-0063 is a medium-severity flaw (CVSS 5.4) affecting wordpress shortcodes. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The WordPress Shortcodes WordPress plugin through 1.6.36 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode 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	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-03-06
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: synved

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

Am I affected?

Timeline

2023-03-06 14:15 UTCPublished CVE record published
2026-06-17 05:24 UTCUpdated Record last modified

synved wordpress shortcodes UPGRADE

Affected: <= 1.6.36

Fixed in: newer than 1.6.36

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wordpress-shortcodes || rpm -q wordpress-shortcodes || wordpress-shortcodes --version

2. UPGRADE to newer than 1.6.36 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wordpress-shortcodes

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wordpress-shortcodes

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-2023-0063?

wordpress shortcodes: upgrade to newer than 1.6.36. Exact commands for each OS are on this page.

Is CVE-2023-0063 being exploited?

CVE-2023-0063 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-2023-0063 affect?

CVE-2023-0063 affects wordpress shortcodes. Severity is medium (CVSS 5.4). The WordPress Shortcodes WordPress plugin through 1.6.36 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor rol

How urgent is CVE-2023-0063?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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