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CVE-2026-45788

7.5 · HIGH

Discourse is an open-source discussion platform.

Published Jul 9, 2026CWE-200EPSS 0.63%

Overview

CVE-2026-45788 is a high-severity vulnerability. It was published on July 9, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5GitHubgithub.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471GitHubgithub.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95GitHubgithub.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aaGitHubgithub.com/discourse/discourse/releases/tag/v2026.1.5GitHubgithub.com/discourse/discourse/releases/tag/v2026.4.2GitHubgithub.com/discourse/discourse/releases/tag/v2026.5.1GitHubgithub.com/discourse/discourse/releases/tag/v2026.6.0GitHubgithub.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45788?

CVE-2026-45788 is a high-severity vulnerability. It was published on July 9, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-45788?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45788?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45788?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45788 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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