CVE-2023-30538
Stored Cross-site Scripting via improper sanitization of svg files in Discourse
Severity Score
5.4
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Discourse is an open source platform for community discussion. Due to the improper sanitization of SVG files, an attacker can execute arbitrary JavaScript on the users’ browsers by uploading a crafted SVG file. This issue is patched in the latest stable and tests-passed versions of Discourse. Users are advised to upgrade. For users unable to upgrade there are two possible workarounds: enable CDN handing of uploads (and ensure the CDN sanitizes SVG files) or disable SVG file uploads by ensuring that the `authorized extensions` site setting does not include `svg` (or reset that setting to the default, by default Discourse doesn't enable SVG uploads by users).
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-04-12 CVE Reserved
- 2023-04-18 CVE Published
- 2024-04-24 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43 | Mitigation |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Discourse Search vendor "Discourse" | Discourse Search vendor "Discourse" for product "Discourse" | <= 3.0.2 Search vendor "Discourse" for product "Discourse" and version " <= 3.0.2" | stable |
Affected
| ||||||
| Discourse Search vendor "Discourse" | Discourse Search vendor "Discourse" for product "Discourse" | < 3.1.0 Search vendor "Discourse" for product "Discourse" and version " < 3.1.0" | beta |
Affected
| ||||||
| Discourse Search vendor "Discourse" | Discourse Search vendor "Discourse" for product "Discourse" | 3.1.0 Search vendor "Discourse" for product "Discourse" and version "3.1.0" | beta1, beta |
Affected
| ||||||
| Discourse Search vendor "Discourse" | Discourse Search vendor "Discourse" for product "Discourse" | 3.1.0 Search vendor "Discourse" for product "Discourse" and version "3.1.0" | beta2, beta |
Affected
| ||||||
| Discourse Search vendor "Discourse" | Discourse Search vendor "Discourse" for product "Discourse" | 3.1.0 Search vendor "Discourse" for product "Discourse" and version "3.1.0" | beta3, beta |
Affected
| ||||||