LeslieLeung CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

HIGH LeslieLeung CVE published 2026-09-17

CVE-2026-54339

CVE-2026-54339 is a server-side request forgery vulnerability in Glean, a self-hosted RSS reader and personal knowledge management tool, prior to version 0.2.6. An attacker can exploit this vulnerability by providing a malicious feed URL, which can cause the server to request private, loopback, link-local, or cloud-metadata resources, potentially disclosing internal configuration or web content, and cloud [truncated]