SSRF in Klosk Adloop
CVE-2026-15525
A vulnerability was detected in kLOsk adloop up to 0.9.0. This vulnerability affects the function _validate_urls of the file src/adloop/ads/write.py. Performing a manipulation of the argument final_url results in server-side request forgery. The attack may be initiated remotely. The exploit is now public and may be used. Upgrading to version 0.10.0 is able to resolve this issue. The patch is named 217399723e3a2fb39389e5355d49ed80aaf9ea7c. Upgrading the affected component is advised.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (30.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Klosk Adloop — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/377854 (technical-description, vdb-entry)
- vuldb.com/vuln/377854/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-15525 (third-party-advisory)
- vuldb.com/submit/854528 (third-party-advisory)
- github.com/kLOsk/adloop/issues/41 (issue-tracking, exploit)
- github.com/kLOsk/adloop/commit/217399723e3a2fb39389e5355d49ed80aaf9ea7c (patch)
- github.com/kLOsk/adloop/releases/tag/v0.10.0 (patch)
- github.com/kLOsk/adloop/ (product)
Frequently asked questions
- What is CVE-2026-15525?
- CVE-2026-15525 is a medium-severity vulnerability in Klosk Adloop, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-07-13.
- How severe is CVE-2026-15525?
- Medium severity. CVSS v3 base score is 6.3 out of 10.