CVE-2026-23878: Hotcrp

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

HotCRP is conference review software. Starting in commit aa20ef288828b04550950cf67c831af8a525f508 and prior to commit ceacd5f1476458792c44c6a993670f02c984b4a0, authors with at least one submission on a HotCRP site could use the document API to download any documents (PDFs, attachments) associated with any submission. The problem was patched in commit ceacd5f1476458792c44c6a993670f02c984b4a0.

Affected products

• Hotcrp Hotcrp: version 3.1 only

Published 2026-01-19. Last modified 2026-06-17.