SecuriTricks - CVE-2026-44783

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.

Product(s) Impacted

Vendor	Product	Versions
Discourse	Discourse	2026.1.0-2026.1.4, 2026.3.0-2026.3.1, 2026.4.0-2026.4.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-284

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	discourse	discourse	2026.1.0-2026.1.4	/	/	/	/	/	/	/
a	discourse	discourse	2026.3.0-2026.3.1	/	/	/	/	/	/	/
a	discourse	discourse	2026.4.0-2026.4.1	/	/	/	/	/	/	/

References

https://github.com/discourse/discourse/security/advisories/GHSA-98ch-mgfj-wqpw

CVSS Score

5.4 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

View Vector String

Timeline

Published: June 12, 2026, 9:16 p.m.
Last Modified: June 12, 2026, 9:16 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-44783