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01 Record

CVE-2025-67723

Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin

MediumPUBLISHEDCNA: GitHub_M
CNA base score4.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L

02 Description

Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin

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.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.21% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 12.0% of scored records. A rank, not a probability.
NVD base score
5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
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
2026-01-28 18:21Z9 MO AGO
Last updated
2026-01-28 19:28Z9 MO AGO
Reserved
2025-12-10
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 4.6)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
Weaknesses
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.2
Document digest
c696b1bd319b23d5a913f2d85d9f89bebae4f66d7b8aacd663f5af9db4751a43

05 Affected products

VendorProductVersionsPlatforms
discoursediscourse< 3.5.4, >= 2025.11.0-latest, < 2025.11.2, >= 2025.12.0-latest, < 2025.12.1, >= 2026.1.0-latest, < 2026.1.0—

06 References