CVEvulnerability

CVE-2023-23935

4.3 MEDIUM Published 2023-03-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-03-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.5 LOW — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-200

Description

Discourse is an open-source messaging platform. In versions 3.0.1 and prior on the `stable` branch and versions 3.1.0.beta2 and prior on the `beta` and `tests-passed` branches, the count of personal messages displayed for a tag is a count of all personal messages regardless of whether the personal message is visible to a given user. As a result, any users can technically poll a sensitive tag to determine if a new personal message is created even if the user does not have access to the personal message. In the patched versions, the count of personal messages tagged with a given tag is hidden by default. To revert to the old behaviour of displaying the count of personal messages for a given tag, an admin may enable the `display_personal_messages_tag_counts` site setting.

Affected configurations

• discourse discourse (< 3.0.1) • discourse discourse 1.1.0 • discourse discourse 1.2.0 • discourse discourse 1.3.0 • discourse discourse 1.4.0 • discourse discourse 1.5.0 • discourse discourse 1.6.0 • discourse discourse 1.7.0 • discourse discourse 1.8.0 • discourse discourse 1.9.0 • discourse discourse 2.0.0 • discourse discourse 2.1.0 • discourse discourse 2.2.0 • discourse discourse 2.3.0 • discourse discourse 2.4.0 • discourse discourse 2.5.0 • discourse discourse 2.6.0 • discourse discourse 2.7.0 • discourse discourse 2.8.0 • discourse discourse 2.9.0 • discourse discourse 3.0.0 • discourse discourse 3.1.0

Related

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References