PT-2026-56995 · Discourse · Discourse

Published 2026-07-09 · Updated 2026-07-09 · CVE-2026-45788

NVD

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, secure uploads could be exposed by pull hotlinked images when an attacker knew the secured upload URL and the secure uploads site setting was enabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-45788

Affected Products

Discourse

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-45788 · Security Note
• https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95 · Note
• https://github.com/discourse/discourse/releases/tag/v2026.6.0 · Note
• https://github.com/discourse/discourse/releases/tag/v2026.5.1 · Note
• https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38 · Note
• https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa · Note
• https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5 · Note
• https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471 · Note
• https://github.com/discourse/discourse/releases/tag/v2026.1.5 · Note
• https://github.com/discourse/discourse/releases/tag/v2026.4.2 · Note