CVE-2025-31883: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPWebina

Q: How do I fix CVE-2025-31883?

webinarpress: upgrade to newer than 1.33.28. Exact commands for each OS are on this page.

Q: Is CVE-2025-31883 being exploited?

CVE-2025-31883 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-2025-31883 affect?

CVE-2025-31883 affects webinarpress. Severity is medium (CVSS 5.9). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Stored XSS.This issue affects WebinarPress: from n/a through <= 1.33.28.

Q: How urgent is CVE-2025-31883?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 5.9UPGRADE

CVE-2025-31883 is a medium-severity flaw (CVSS 5.9) affecting webinarpress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Stored XSS.This issue affects WebinarPress: from n/a through <= 1.33.28.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-04-01
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: webinarpress

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

Am I affected?

Timeline

2025-04-01 15:16 UTCPublished CVE record published
2026-06-17 09:11 UTCUpdated Record last modified

webinarpress webinarpress UPGRADE

Affected: <= 1.33.28

Fixed in: newer than 1.33.28

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.33.28 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webinarpress

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-2025-31883?

webinarpress: upgrade to newer than 1.33.28. Exact commands for each OS are on this page.

Is CVE-2025-31883 being exploited?

CVE-2025-31883 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-2025-31883 affect?

CVE-2025-31883 affects webinarpress. Severity is medium (CVSS 5.9). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Stored XSS.This issue affects WebinarPress: from n/a through <= 1.33.28.

How urgent is CVE-2025-31883?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2025-62972 MEDIUM 4.3 UPGRADE Missing Authorization vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Exploiting Incorre
CVE-2025-47635 MEDIUM 5.5 UPGRADE Server-Side Request Forgery (SSRF) vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Serve
CVE-2025-32693 MEDIUM 4.7 UPGRADE URL Redirection to Untrusted Site ('Open Redirect') vulnerability in WPWebinarSystem WebinarPress wp-webinarsy
CVE-2025-31882 MEDIUM 4.3 UPGRADE Missing Authorization vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Exploiting Incorre
CVE-2024-43339 MEDIUM 5.4 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in WebinarPress allows Cross-Site Scripting (XSS).This issue a

References

← Back to latest CVEs