01 Record
CVE-2026-72723
Discourse: Anonymous sidebar serialization exposes descriptions of category-restricted tags
MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
02 Description
Discourse: Anonymous sidebar serialization exposes descriptions of category-restricted tags
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.52% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 44.2% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- NVD analysis status
- Deferred. NVD last modified this record on 2026-09-08.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-08-10 15:56Z2 MO AGO
- Last updated
- 2026-08-10 21:11Z2 MO AGO
- Reserved
- 2026-08-10
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-862Missing AuthorizationClass
- Data version
- 5.2
- Document digest
- d15648ac0dedbe853d7894da474c283f071adf001de309368e15b4fd3b518adf
05 Affected products
VendorProductVersionsPlatforms
discoursediscourse< 2026.1.6, >= 2026.5.0-latest, < 2026.5.2, >= 2026.6.0-latest, < 2026.6.1, >= 2026.7.0-latest, < 2026.7.0—
06 References
- github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-4p6q-h74v-5j7p
- github.comhttps://github.com/discourse/discourse/pull/42091
- github.comhttps://github.com/discourse/discourse/pull/42092
- github.comhttps://github.com/discourse/discourse/pull/42093
- github.comhttps://github.com/discourse/discourse/pull/42094
- github.comhttps://github.com/discourse/discourse/commit/0248e9ca82d0493037a9ca04d73904ccfad795f9
- github.comhttps://github.com/discourse/discourse/commit/03444ddb74d535dda557350f4c5800a6ec2669d7
- github.comhttps://github.com/discourse/discourse/commit/900f51c147913f667e64484c2f2dd48c723314ac
- github.comhttps://github.com/discourse/discourse/commit/da84c677213cac3b024e753f180f45472b89efde