01 Record
CVE-2026-72722
Discourse: Duplicate lookup reveals restricted topic titles through canonicalized URLs
MediumPUBLISHEDCNA: GitHub_M
CNA base score4.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
02 Description
Discourse: Duplicate lookup reveals restricted topic titles through canonicalized URLs
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.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.44% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 38.1% of scored records. A rank, not a probability.
- NVD base score
- 4.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/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 15:54Z2 MO AGO
- Last updated
- 2026-08-13 17:46Z2 MO AGO
- Reserved
- 2026-08-10
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 4.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-862Missing AuthorizationClass
- Data version
- 5.2
- Document digest
- d39b268a72a6312b507048f1782f6441d01d1ed58054c64f44849580cabe814b
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-4fx9-5m29-83p4
- 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/45abd925e46e8be40d2d047bced26628f26e4e31
- github.comhttps://github.com/discourse/discourse/commit/7d7ce546ac86e24a6512b321ace69fc52fe37bf4
- github.comhttps://github.com/discourse/discourse/commit/836a251d54a1004fb1c463a7d299b933b176191f
- github.comhttps://github.com/discourse/discourse/commit/e54ba27eacee0f14f315e510e287e7ac2e4bdb1a