CVE-2026-28677: Opensift

High severity, CVSS 8.2. EPSS: 0.5% chance of exploitation in the next 30 days.

OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Prior to version 1.6.3-alpha, the URL ingest pipeline accepted user-controlled remote URLs with incomplete destination restrictions. Although private/local host checks existed, missing restrictions for credentialed URLs, non-standard ports, and cross-host redirects left SSRF-class abuse paths in non-localhost deployments. This issue has been patched in version 1.6.3-alpha.

Affected products

• Opensift Opensift: before 1.6.3 (fixed in 1.6.3)

Published 2026-03-06. Last modified 2026-06-17.