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01 Record

CVE-2022-23549

Discourse vulnerable to bypass of post max_length using HTML comments

MediumPUBLISHEDCNA: GitHub_M
CNA base score5.7 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

02 Description

Discourse vulnerable to bypass of post max_length using HTML comments

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
0.59% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 48.2% of scored records. A rank, not a probability.
NVD base score
6.5 (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:N/I:N/A:H
NVD analysis status
Modified. 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
2023-01-05 00:00Z3 YR AGO
Last updated
2025-03-10 21:32Z1 YR AGO
Reserved
2022-01-19
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 5.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
f534c3560915ec8f4a7e0ab114b76ab34541b941b8e87754d3f0a1736df41637

05 Affected products

VendorProductVersionsPlatforms
discoursediscourse2.8.14 to < 2.8.14, 2.9.0.beta0 to 2.9.0.beta0, 2.9.0.beta16 to < 2.9.0.beta16—

06 References