CVE-2026-93649
CVE-2026-93649
This page contains facts from public vulnerability sources. Check the original advisory before updating.
In the Eclipse Adoptium website (adoptium.net), in every deployment built from commit 0b24ea1 (2025-06-18) up to the fix in commit cbb53cf (2026-09-24), the post-download page /[locale]/download takes a download URL from the "link" query parameter and automatically navigates to it with a meta http-equiv="refresh". The URL is checked against a list of trusted prefixes using String.startsWith() on the raw string, while the browser applies RFC 3986 dot-segment normalisation before navigating, so a value such as https://github.com/adoptium/temurin/../../attacker/malware/releases/download/v1/jdk.exe passes the check but resolves to an attacker-controlled repository. A victim who follows a crafted adoptium.net link is shown the genuine "Thank you for downloading Eclipse Temurin" page while their browser downloads a binary of the attacker's choosing
CVSS 7.5 · High · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
adoptium temurin
- Versions
- ≥ 0, < 1f9753c: Affected (git)
Update to 1f9753c