01 Record
CVE-2026-72720
Discourse: HTML injection in PrettyText.format_for_email from cooked-attribute reparsing
MediumPUBLISHEDCNA: GitHub_M
CNA base score6.4 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
02 Description
Discourse: HTML injection in PrettyText.format_for_email from cooked-attribute reparsing
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
- 0.40% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 34.7% of scored records. A rank, not a probability.
- NVD base score
- 6.4 (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:C/C:L/I:L/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 15:41Z2 MO AGO
- Last updated
- 2026-08-10 18:17Z2 MO AGO
- Reserved
- 2026-08-10
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.4)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
- Data version
- 5.2
- Document digest
- 0054266ef8ab626a3f2a55879ee05f2c13052b51dd7949462ff66e5d61e2dfde
05 Affected products
VendorProductVersionsPlatforms
discoursediscourse< 2026.1.7, >= 2026.6.0-latest, < 2026.6.2, >= 2026.7.0-latest, < 2026.7.1, >= 2026.8.0-latest, < 2026.8.0-latest.1—
06 References
- github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-3q6f-6gm9-m35v
- github.comhttps://github.com/discourse/discourse/pull/42244
- github.comhttps://github.com/discourse/discourse/pull/42245
- github.comhttps://github.com/discourse/discourse/pull/42246
- github.comhttps://github.com/discourse/discourse/pull/42247
- github.comhttps://github.com/discourse/discourse/commit/234ee88a5b9b53bf938c53351eab20130323485f
- github.comhttps://github.com/discourse/discourse/commit/4b639a52f47fb3d46093bece9df147e4e9517a11
- github.comhttps://github.com/discourse/discourse/commit/a5d3b112d598242c1d1803d5a77bf98d5fdabd75
- github.comhttps://github.com/discourse/discourse/commit/b25a074b165253e01fc4c8911b980fc68338ea16