CVE-2021-32764
CVSS V2 Low 3.5
CVSS V3 Medium 5.4
Description
Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. The issue is patched in `stable` version 2.7.6, `beta` version 2.8.0.beta3, and `tests-passed` version 2.8.0.beta3. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.
Overview
- CVE ID
- CVE-2021-32764
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-15T21:15:09
- Last Modified Date
- 2021-09-13T14:44:47
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* | 1 | OR | 2.7.5 | |
| cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:S/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 3.5
- Severity
- LOW
- Exploitability Score
- 6.8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 5.4
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 2.5
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hw | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-32764 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32764 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:05:53 | Added to TrackCVE | |||
| 2022-12-05 06:19:12 | 2021-07-15T21:15Z | 2021-07-15T21:15:09 | CVE Published Date | updated |
| 2022-12-05 06:19:12 | 2021-09-13T14:44:47 | CVE Modified Date | updated | |
| 2022-12-05 06:19:13 | Analyzed | Vulnerability Status | updated |