CVE-2023-6938: The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all

Q: How do I fix CVE-2023-6938?

oxygen: upgrade to 4.8.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-6938 being exploited?

CVE-2023-6938 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-2023-6938 affect?

CVE-2023-6938 affects oxygen. Severity is medium (CVSS 6.4). The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all versions up to, and including, 4.8 due to insufficient input sanitization and output escaping. This makes it possible for authent

Q: How urgent is CVE-2023-6938?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADE

CVE-2023-6938 is a medium-severity flaw (CVSS 6.4) affecting oxygen. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all versions up to, and including, 4.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: Version 4.8.1 of the Oxygen Builder plugin

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-01-11
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: soflyy

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

Am I affected?

Timeline

2024-01-11 15:15 UTCPublished CVE record published
2026-06-17 06:51 UTCUpdated Record last modified

soflyy oxygen UPGRADE

Affected: < 4.8.1

Fixed in: 4.8.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy oxygen || rpm -q oxygen || oxygen --version

2. UPGRADE to 4.8.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade oxygen

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade oxygen

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-2023-6938?

oxygen: upgrade to 4.8.1. Exact commands for each OS are on this page.

Is CVE-2023-6938 being exploited?

CVE-2023-6938 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-2023-6938 affect?

CVE-2023-6938 affects oxygen. Severity is medium (CVSS 6.4). The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all versions up to, and including, 4.8 due to insufficient input sanitization and output escaping. This makes it possible for authent

How urgent is CVE-2023-6938?

Priority 28/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2022-46841 MEDIUM 5.4 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in Soflyy Oxygen Builder plugin <= 4.4 versions.
CVE-2008-2816 HIGH 7.5 DOWNGRADE SQL injection vulnerability in post.php in Oxygen (aka O2PHP Bulletin Board) 2.0 allows remote attackers to ex
CVE-2006-6280 HIGH 7.5 UPGRADE SQL injection vulnerability in viewthread.php in Oxygen (O2PHP Bulletin Board) 1.1.3 and earlier allows remote
CVE-2006-1572 MEDIUM 5.0 DOWNGRADE SQL injection vulnerability in post.php in Oxygen 1.1.3 allows remote attackers to execute arbitrary SQL comma

References

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