CVE-2025-41050: A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due

Routine

MEDIUM 5.4DOWNGRADE

CVE-2025-41050 is a medium-severity flaw (CVSS 5.4) affecting apprain. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due to a lack of proper validation of user input, through the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters in /apprain/developer/addons/update/base_libs.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-09-04
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: apprain

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

Am I affected?

Timeline

2025-09-04 12:15 UTCPublished CVE record published
2026-06-17 09:22 UTCUpdated Record last modified

apprain apprain DOWNGRADE

Affected: 4.0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0.5 (Debian / Ubuntu)

apt-cache madison apprain sudo apt install apprain=<VERSION_BEFORE_4.0.5> sudo apt-mark hold apprain

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list apprain sudo dnf downgrade apprain-<VERSION_BEFORE_4.0.5> sudo dnf versionlock add apprain

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-2025-41050?

apprain: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-41050 being exploited?

CVE-2025-41050 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-2025-41050 affect?

CVE-2025-41050 affects apprain. Severity is medium (CVSS 5.4). A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due to a lack of proper validation of user input, through the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters in

How urgent is CVE-2025-41050?

Priority 21/100. No elevated risk signals yet.

Related CVEs

CVE-2025-41036 MEDIUM 5.4 DOWNGRADE A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due
CVE-2025-41044 MEDIUM 5.4 DOWNGRADE A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due
CVE-2025-41052 MEDIUM 5.4 DOWNGRADE A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due
CVE-2024-58279 HIGH 8.8 DOWNGRADE appRain CMF 4.0.5 contains an authenticated remote code execution vulnerability that allows administrative use
CVE-2025-41063 MEDIUM 5.4 DOWNGRADE A vulnerability has been discovered in version 4.0.5 of appRain CMF, consisting of an authenticated reflected

References

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