kLOsk adloop write.py _validate_urls server-side request forgery (CVE-2026-15525) | HOL Guard CVE

Medium · CVSS 6.3CVE-2026-15525

kLOsk adloop write.py _validate_urls server-side request forgery

Answer in brief

CVE-2026-15525 records a Medium severity (CVSS 6.3) vulnerability in kLOsk adloop write.py _validate_urls server-side request forgery. The current sources do not mark it as known exploited. The current feed maps kLOsk/adloop (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 13, 2026Updated Jul 13, 2026Source checked Sep 20, 2026First seen by HOL Jul 13, 2026Material review Jul 13, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kLOsk/adloop (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
kLOsk/adloopgeneric	0.1 \|\| 0.2 \|\| 0.3 \|\| 0.4 \|\| 0.5 \|\| 0.6 \|\| 0.7 \|\| 0.8 \|\| 0.9.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for kLOsk/adloop.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Jul 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jul 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 13, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.