Preliminary research

Getting Started in Bug Bounty: Ten Non-obvious S3 Integration Vulnerabilities in Web Applications

Sergey Bobrov (BlackFan) · Positive Technologies / Habr · 9 September 2026

AI-collected research leads through 3 November 2026, including a November–October–September missed-article review and a targeted multilingual search alongside earlier community-source sweeps. Unranked, incomplete, not community-vetted, and subject to change.

Ten S3-compatible integration labs connect proxy prefix errors, decoded URI request splitting, raw object keys and omitted cache-key inputs to data disclosure and stored XSS. Additional cases cover root-path signing, content-type overrides, service workers and leaked Django debug credentials. Fingerprinting and signing tools support the lab workflow.

Record

Researcher

Sergey Bobrov (BlackFan)

Published by

Positive Technologies / Habr

Date

9 September 2026

In the archive

• Collected in the 2026 preliminary research sweep

Related sources

• Ten laboratory configurations
• Storage fingerprinting tool
• Request signing tool
• Earlier same-work video

Tags

• cloud
• security-misconfiguration
• request-smuggling
• cache-poisoning
• path-traversal
• xss
• info-leak
• owasp-a01-2021
• owasp-a03-2021

This page is the archive's own catalogue record. The research is the work of Sergey Bobrov (BlackFan), first published at the original source. Preserved copies are kept so the citation survives its host.