CVE-2025-52035: A vulnerability in NotesCMS and specifically in the page /index.php?route=notes

Routine

MEDIUM 6.1UPGRADE

CVE-2025-52035 is a medium-severity flaw (CVSS 6.1) affecting notescms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in NotesCMS and specifically in the page /index.php?route=notes. The manipulation of the title of the service descriptions leads to a stored XSS vulnerability. The issue was confirmed to be present in the source code as of commit 7d821a0f028b0778b245b99ab3d3bff1ac10e2d3 (dated 2024-05-08) and was fixed in commit 95322c5121dbd7070f3bd54f2848079654a0a8ea (dated 2025-03-31). The attack can be launched remotely.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: exe-system

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

Am I affected?

Timeline

2025-08-26 15:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

exe-system notescms UPGRADE

Affected: >= 2024-05-08 and < 2025-05-31

Fixed in: 2025-05-31

Safe to downgrade to: a release before 2024-05-08

1. Check installed version

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

2. UPGRADE to 2025-05-31 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade notescms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2024-05-08 (Debian / Ubuntu)

apt-cache madison notescms sudo apt install notescms=<VERSION_BEFORE_2024-05-08> sudo apt-mark hold notescms

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list notescms sudo dnf downgrade notescms-<VERSION_BEFORE_2024-05-08> sudo dnf versionlock add notescms

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-52035?

notescms: upgrade to 2025-05-31. Exact commands for each OS are on this page.

Is CVE-2025-52035 being exploited?

CVE-2025-52035 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-2025-52035 affect?

CVE-2025-52035 affects notescms. Severity is medium (CVSS 6.1). A vulnerability in NotesCMS and specifically in the page /index.php?route=notes. The manipulation of the title of the service descriptions leads to a stored XSS vulnerability. The issue was confirmed to be present in the source code as of c

How urgent is CVE-2025-52035?

Priority 29/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-52037 MEDIUM 6.1 UPGRADE A vulnerability has been found in NotesCMS and classified as medium
CVE-2025-52036 MEDIUM 6.1 UPGRADE A vulnerability has been found in NotesCMS and classified as medium

References

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