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CVE-2023-5660: The SendPress Newsletters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's s

40
This month
MEDIUM 6.4UPGRADE

CVE-2023-5660 is a medium-severity flaw (CVSS 6.4) affecting sendpress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The SendPress Newsletters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 1.22.3.31 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected

Why this priority

  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score6.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.7% (top 48%)
CISA exploited listNo
WeaknessCWE-79
Published2023-11-07
Last modified2026-06-17
Publisher (CNA): Wordfence · Vendor: pressified

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

Am I affected?

Timeline

pressified sendpress UPGRADE
Affected: < 1.23.11.6
Fixed in: 1.23.11.6
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy sendpress || rpm -q sendpress || sendpress --version
2. UPGRADE to 1.23.11.6 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade sendpress
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade sendpress
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-2023-5660?

sendpress: upgrade to 1.23.11.6. Exact commands for each OS are on this page.

Is CVE-2023-5660 being exploited?

CVE-2023-5660 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-2023-5660 affect?

CVE-2023-5660 affects sendpress. Severity is medium (CVSS 6.4). The SendPress Newsletters plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 1.22.3.31 due to insufficient input sanitization and output escaping on user sup

How urgent is CVE-2023-5660?

Priority 40/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

References

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