CVE-2025-13262 — web-client
CVE-2025-13262 is a Path Traversal vulnerability in lsfusion.platform:web-client. No vendor fix is recorded yet; mitigation options are listed below.
lsfusion platform UploadFileRequestHandler.java UploadFileRequestHandler path traversal
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-2025-13262.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Real-World Exposure
lsfusion.platform:web-clientReal-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 determined in lsfusion platform up to 6.1. Affected by this vulnerability is the function UploadFileRequestHandler of the file platform/web-client/src/main/java/lsfusion/http/controller/file/UploadFileRequestHandler.java. Executing manipulation of the argument sid can lead to path traversal. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | lsfusion.platform:web-client | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
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
No patched version of lsfusion.platform:web-client has shipped for CVE-2025-13262 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-13262 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-13262. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2025-13262 in your dependencies?
O3 Security finds CVE-2025-13262 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.