CVE-2023-28421: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Winwar Media WordPress Email Marke

Q: How do I fix CVE-2023-28421?

wp email capture: upgrade to 3.11. Exact commands for each OS are on this page.

Q: Is CVE-2023-28421 being exploited?

CVE-2023-28421 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-2023-28421 affect?

CVE-2023-28421 affects wp email capture. Severity is medium (CVSS 5.3). Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Winwar Media WordPress Email Marketing Plugin – WP Email Capture.This issue affects WordPress Email Marketing Plugin – WP Email Capture: from n/a through 3.10.

Q: How urgent is CVE-2023-28421?

Priority 35/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2023-28421 is a medium-severity flaw (CVSS 5.3) affecting wp email capture. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Winwar Media WordPress Email Marketing Plugin – WP Email Capture.This issue affects WordPress Email Marketing Plugin – WP Email Capture: from n/a through 3.10.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-200
Published	2023-12-21
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: winwar

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

Am I affected?

Timeline

2023-12-21 14:15 UTCPublished CVE record published
2026-06-17 05:47 UTCUpdated Record last modified

winwar wp email capture UPGRADE

Affected: < 3.11

Fixed in: 3.11

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-email-capture || rpm -q wp-email-capture || wp-email-capture --version

2. UPGRADE to 3.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-email-capture

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-email-capture

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-2023-28421?

wp email capture: upgrade to 3.11. Exact commands for each OS are on this page.

Is CVE-2023-28421 being exploited?

CVE-2023-28421 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-2023-28421 affect?

CVE-2023-28421 affects wp email capture. Severity is medium (CVSS 5.3). Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Winwar Media WordPress Email Marketing Plugin – WP Email Capture.This issue affects WordPress Email Marketing Plugin – WP Email Capture: from n/a through 3.10.

How urgent is CVE-2023-28421?

Priority 35/100. Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-23724 MEDIUM 4.3 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in Winwar Media WP Email Capture plugin <= 3.9.3 versions.
CVE-2023-23723 MEDIUM 5.9 UPGRADE Auth

References

← Back to latest CVEs