CVE-2025-23998: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in rarathem

Q: How do I fix CVE-2025-23998?

the ultralight: upgrade to newer than 1.2. Exact commands for each OS are on this page.

Q: Is CVE-2025-23998 being exploited?

CVE-2025-23998 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-2025-23998 affect?

CVE-2025-23998 affects the ultralight. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in raratheme UltraLight the-ultralight allows Reflected XSS.This issue affects UltraLight: from n/a through <= 1.2.

Routine

HIGH 7.1UPGRADE

CVE-2025-23998 is a high-severity flaw (CVSS 7.1) affecting the ultralight. 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 raratheme UltraLight the-ultralight allows Reflected XSS.This issue affects UltraLight: from n/a through <= 1.2.

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	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-01-21
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: rarathemes

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

Am I affected?

Timeline

2025-01-21 14:15 UTCPublished CVE record published
2026-06-17 08:57 UTCUpdated Record last modified

rarathemes the ultralight UPGRADE

Affected: <= 1.2

Fixed in: newer than 1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy the-ultralight || rpm -q the-ultralight || the-ultralight --version

2. UPGRADE to newer than 1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade the-ultralight

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade the-ultralight

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-2025-23998?

the ultralight: upgrade to newer than 1.2. Exact commands for each OS are on this page.

Is CVE-2025-23998 being exploited?

CVE-2025-23998 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-2025-23998 affect?

CVE-2025-23998 affects the ultralight. Severity is high (CVSS 7.1). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in raratheme UltraLight the-ultralight allows Reflected XSS.This issue affects UltraLight: from n/a through <= 1.2.

How urgent is CVE-2025-23998?

Priority 30/100. High severity

References

← Back to latest CVEs