CVE-2026-45788

medium

Description

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.

References

https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38

https://github.com/discourse/discourse/releases/tag/v2026.6.0

https://github.com/discourse/discourse/releases/tag/v2026.5.1

https://github.com/discourse/discourse/releases/tag/v2026.4.2

https://github.com/discourse/discourse/releases/tag/v2026.1.5

https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa

https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95

https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471

https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5

Details

Source: Mitre, NVD

Published: 2026-07-09

Updated: 2026-07-09

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High

CVSS v4

Base Score: 6.3

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: Medium