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01 Record

CVE-2022-31108

Arbitrary `CSS` injection into the generated graph affecting the container HTML in mermaid.js

MediumPUBLISHEDCNA: GitHub_M
CNA base score4.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N

02 Description

Arbitrary `CSS` injection into the generated graph affecting the container HTML in mermaid.js

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • 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
0.91% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 59.7% of scored records. A rank, not a probability.
NVD base score
6.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
2022-06-28 18:35Z4 YR AGO
Last updated
2025-04-22 17:52Z1 YR AGO
Reserved
2022-05-18
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 4.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
Weaknesses
  • CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.1
Document digest
410bb3f2492903d8b8e17c14de71e4268908730d6af5bbdfdd3a4b7a45eb507e

05 Affected products

VendorProductVersionsPlatforms
mermaid-jsmermaid>= 8.0.0, < 9.1.3—

06 References

07 Fixed in

Debian 14

  • node-mermaid
    Fixed in 9.2.2+~2.0.0-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • node-mermaid
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • node-mermaid
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.