CVE-2025-22635: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in imitheme

Q: How do I fix CVE-2025-22635?

eventer: upgrade to 3.9.9. Exact commands for each OS are on this page.

Q: Is CVE-2025-22635 being exploited?

CVE-2025-22635 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-2025-22635 affect?

CVE-2025-22635 affects eventer. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in imithemes Eventer eventer allows Reflected XSS.This issue affects Eventer: from n/a through < 3.9.9.

Routine

HIGH 7.1UPGRADE

CVE-2025-22635 is a high-severity flaw (CVSS 7.1) affecting eventer. 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 imithemes Eventer eventer allows Reflected XSS.This issue affects Eventer: from n/a through < 3.9.9.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-02-23
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: imithemes

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

Am I affected?

Timeline

2025-02-23 23:15 UTCPublished CVE record published
2026-06-17 08:48 UTCUpdated Record last modified

imithemes eventer UPGRADE

Affected: < 3.9.9

Fixed in: 3.9.9

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.9.9 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade eventer

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-2025-22635?

eventer: upgrade to 3.9.9. Exact commands for each OS are on this page.

Is CVE-2025-22635 being exploited?

CVE-2025-22635 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-2025-22635 affect?

CVE-2025-22635 affects eventer. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in imithemes Eventer eventer allows Reflected XSS.This issue affects Eventer: from n/a through < 3.9.9.

How urgent is CVE-2025-22635?

Priority 28/100. High severity

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References

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