Vulnerability in Outsystems Platform Server
CVE-2025-61258
Outsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service via a crafted content-length value mismatching the body length. NOTE: the Supplier indicates that they are unable to reproduce this.
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Outsystems Platform Server — versions 11.18.1.37828
Weakness classification (CWE)
References
- www.outsystems.com/ (Product)
- balwurk.com/ (Not Applicable)
- balwurk.github.io/CVE-2025-61258/ (Exploit, Third Party Advisory)
- ghostline.neocities.org/CVE-2025-61258/
Frequently asked questions
- What is CVE-2025-61258?
- CVE-2025-61258 is a high-severity vulnerability in Outsystems Platform Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 7.5/10. Published 2025-12-09.
- How severe is CVE-2025-61258?
- High severity. CVSS v3 base score is 7.5 out of 10.