CVE-2023-23624 json
Discourse's exclude_tags param could leak which topics had a specific hidden tag
published 2023-01-27 3 y ago modified 2026-09-08 2 mo ago also BIT-discourse-2023-23624 , EUVD-2023-27717 , GHSA-qgj5-g5vf-fm7q
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches, someone can use the `exclude_tag param` to filter out topics and deduce which ones were using a specific hidden tag. This affects any Discourse site using hidden tags in public categories. This issue is patched in version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches. As a workaround, secure any categories that are using hidden tags, change any existing hidden tags to not include private data, or remove any hidden tags currently in use.
Patch / fix
- bitnami discourse 3.0.1
- discourse discourse 3.0.1
- github.com/discourse/discourse@f55e0fe commit
- github.com/discourse/discourse#20006 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | discourse | <3.0.1 |
3.0.1 |
Affected products
- discourse discourse
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/discourse/discourse/pull/20006
issue-tracking, patch
-
github.com
/discourse/discourse/commit/f55e0fe7910149c431861c18ce407d1be0d6091a
patch
-
github.com
/discourse/discourse/security/advisories/GHSA-qgj5-g5vf-fm7q
third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-23624
web
Sources
- CVE List CVE-2023-23624
- NVD CVE-2023-23624
- OSV BIT-discourse-2023-23624
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