Overview
- Description
- matrix-react-sdk is a react-based SDK for inserting a Matrix chat/voip client into a web page. The Export Chat feature includes certain attacker-controlled elements in the generated document without sufficient escaping, leading to stored Cross site scripting (XSS). Since the Export Chat feature generates a separate document, an attacker can only inject code run from the `null` origin, restricting the impact. However, the attacker can still potentially use the XSS to leak message contents. A malicious homeserver is a potential attacker since the affected inputs are controllable server-side. This issue has been addressed in commit `22fcd34c60` which is included in release version 3.76.0. Users are advised to upgrade. The only known workaround for this issue is to disable or to not use the Export Chat feature.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.4
- Impact score
- 2.7
- Exploitability score
- 2.3
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
Weaknesses
- security-advisories@github.com
- CWE-79
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:matrix-react-sdk_project:matrix-react-sdk:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "E73DB529-1353-4F26-BEE4-8AC754FA3B70",
"versionEndExcluding": "3.76.0",
"versionStartIncluding": "3.32.0"
},
{
"criteria": "cpe:2.3:a:matrix-react-sdk_project:matrix-react-sdk:3.76.0:rc1:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "5664080A-3C0B-423C-A17D-458C8E41BBB6"
},
{
"criteria": "cpe:2.3:a:matrix-react-sdk_project:matrix-react-sdk:3.76.0:rc2:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "3128DB5F-8C45-4362-BF0E-F6F456C2E39E"
}
],
"operator": "OR"
}
]
}
]