CVE-2026-44783
Last modified
CVE-2026-44783 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, a flaw in how replies to whisper posts are handled allows authenticated users outside the groups configured in whispers_allowed_groups to post into a topic's staff-only whisper channel. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, a flaw in how replies to whisper posts are handled allows authenticated users outside the groups configured in whispers_allowed_groups to post into a topic's staff-only whisper channel. The injected content is visible to whisperers (typically staff) alongside legitimate whispers. Only sites that have whispers enabled are affected. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | < 2026.1.0 |
| Discourse | Discourse | >= 2026.1.0, < 2026.1.4 |
| Discourse | Discourse | >= 2026.3.0, < 2026.3.1 |
| Discourse | Discourse | >= 2026.4.0, < 2026.4.1 |
| Discourse | Discourse | 2026.5.0 |
References
- https://github.com/discourse/discourse/security/advisories/GHSA-98ch-mgfj-wqpwThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-44783?
How severe is CVE-2026-44783?
How do I fix CVE-2026-44783?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-44776Kavita is a cross platform reading server. Prior to 0.9.0, t…5.9
- CVE-2026-44777jq is a command-line JSON processor. In 1.8.2rc1 and earlier…5.5
- CVE-2026-44779Discourse is an open-source discussion platform. From versio…4.3
- CVE-2026-4478A vulnerability was identified in Yi Technology YI Home Came…8.2
- CVE-2026-44780Discourse is an open-source discussion platform. From versio…4.3
- CVE-2026-44782Discourse is an open-source discussion platform. From versio…4.3
- CVE-2026-44784Discourse is an open-source discussion platform. From versio…6.5
- CVE-2026-44785Discourse is an open-source discussion platform. From versio…4.3
- CVE-2026-44786Discourse is an open-source discussion platform. From versio…7.5
- CVE-2026-44787Discourse is an open-source discussion platform. Prior to 20…7.1
- CVE-2026-44788SharpCompress is a fully managed C# library to deal with man…6.5
- CVE-2026-44789n8n is an open source workflow automation platform. Prior to…9.9
Are you affected by CVE-2026-44783?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
