CVE-2026-72732 json
Discourse: Templates endpoint exposes hidden tag names
published 2026-08-10 2 mo ago modified 2026-09-08 2 mo ago also BIT-discourse-2026-72732 , EUVD-2026-55678 , GHSA-xrgc-52m8-82hm
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse_templates endpoint exposed hidden tag names because DiscourseTemplates::TemplatesSerializer in plugins/discourse-templates/app/serializers/discourse_templates/templates_serializer.rb did not filter tags through the request Guardian. The serializer did not respect tag group permissions, allowing users to see tags they were not permitted to view. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
Patch / fix
- bitnami discourse 2026.1.6, 2026.5.2, 2026.6.1
- discourse discourse 2026.1.6, 2026.5.2, 2026.6.1, 2026.7.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% 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 |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | discourse | <2026.1.6 >=2026.5.0, <2026.5.2 >=2026.6.0, <2026.6.1 |
2026.1.6 2026.5.2 2026.6.1 |
Affected products
- discourse discourse
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/discourse/discourse/commit/25e9d55b4c652b8dc1c90f44c40c8f3fec77748c
web
-
github.com
/discourse/discourse/commit/c9b431b3b75727f7132ec231142371d203a6124b
web
-
github.com
/discourse/discourse/commit/f216f258bd473e6299c6aef7b6130e7db90116c0
web
-
github.com
/discourse/discourse/commit/f41e71b645eb60cc263e7a1de22251028115abf1
web
-
github.com
/discourse/discourse/security/advisories/GHSA-xrgc-52m8-82hm
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-72732
web
Sources
- CVE List CVE-2026-72732
- NVD CVE-2026-72732
- OSV BIT-discourse-2026-72732
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.