How severe is CVE-2025-13261?

No CVSS score has been assigned to CVE-2025-13261 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-13261?

CVE-2025-13261 affects the following packages: lsfusion.platform:web-client (Maven). Ecosystems affected: Maven.

How do I fix CVE-2025-13261?

The records we use list no patched version of lsfusion.platform:web-client for CVE-2025-13261. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

How do I detect CVE-2025-13261 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for lsfusion.platform:web-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-13261 if there is no patch (or I can't update yet)?

Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Is CVE-2025-13261 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-13261 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-13261?

CVE-2025-13261 has an EPSS (Exploit Prediction Scoring System) score of 0.8%, placing it in the 55th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-13261?

CVE-2025-13261 is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2025-13261 published, and has it been updated?

CVE-2025-13261 was published on November 17, 2025 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕ Maven

Not in CISA KEV

CVE-2025-13261 — web-client

CVE-2025-13261 is a Path Traversal vulnerability in lsfusion.platform:web-client. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

lsfusion platform DownloadFileRequestHandler.java DownloadFileRequestHandler path traversal

Also known asGHSA-5jpg-2rj5-964c

Published

Nov 17, 2025

Updated

Oct 28, 2026

Affected

1 pkg

Patched

See advisory

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-13261.

EPSS Exploitation Probability

via FIRST.org ↗

0.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs55th percentile — riskier than 55% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

☕lsfusion.platform:web-client

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`lsfusion.platform:web-client`	all versions	No fix

Affected Products

1 product · 1 configurations

Application

lsfusion platformlsfusion

≤ 6.1

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for lsfusion.platform:web-client, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of lsfusion.platform:web-client for CVE-2025-13261. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

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