CVE-2025-13261: A vulnerability was found in lsfusion platform up to 6.1

Q: How do I fix CVE-2025-13261?

lsfusion platform: upgrade to newer than 6.1. Exact commands for each OS are on this page.

Q: Is CVE-2025-13261 being exploited?

CVE-2025-13261 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-2025-13261 affect?

CVE-2025-13261 affects lsfusion platform. Severity is medium (CVSS 5.3). A vulnerability was found in lsfusion platform up to 6.1. Affected is the function DownloadFileRequestHandler of the file web-client/src/main/java/lsfusion/http/controller/file/DownloadFileRequestHandler.java. Performing manipulation of the

Q: How urgent is CVE-2025-13261?

Priority 42/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2025-13261 is a medium-severity flaw (CVSS 5.3) affecting lsfusion platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in lsfusion platform up to 6.1. Affected is the function DownloadFileRequestHandler of the file web-client/src/main/java/lsfusion/http/controller/file/DownloadFileRequestHandler.java. Performing manipulation of the argument Version results in path traversal. Remote exploitation of the attack is possible. The exploit has been made public and could be used.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-11-17
Last modified	2026-10-07

Publisher (CNA): VulDB · Vendor: lsfusion

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-17 04:15 UTCPublished CVE record published
2026-10-07 21:10 UTCUpdated Record last modified

lsfusion lsfusion platform UPGRADE

Affected: <= 6.1

Fixed in: newer than 6.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy lsfusion-platform || rpm -q lsfusion-platform || lsfusion-platform --version

2. UPGRADE to newer than 6.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lsfusion-platform

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lsfusion-platform

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-2025-13261?

lsfusion platform: upgrade to newer than 6.1. Exact commands for each OS are on this page.

Is CVE-2025-13261 being exploited?

CVE-2025-13261 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-2025-13261 affect?

CVE-2025-13261 affects lsfusion platform. Severity is medium (CVSS 5.3). A vulnerability was found in lsfusion platform up to 6.1. Affected is the function DownloadFileRequestHandler of the file web-client/src/main/java/lsfusion/http/controller/file/DownloadFileRequestHandler.java. Performing manipulation of the

How urgent is CVE-2025-13261?

Priority 42/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

Related CVEs

CVE-2025-13262 HIGH 7.3 UPGRADE A vulnerability was determined in lsfusion platform up to 6.1
CVE-2025-13265 MEDIUM 6.3 UPGRADE A weakness has been identified in lsfusion platform up to 6.1

References

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