Vulnerability Details : CVE-2023-23627
Sanitize is an allowlist-based HTML and CSS sanitizer. Versions 5.0.0 and later, prior to 6.0.1, are vulnerable to Cross-site Scripting. When Sanitize is configured with a custom allowlist that allows `noscript` elements, attackers are able to include arbitrary HTML, resulting in XSS (cross-site scripting) or other undesired behavior when that HTML is rendered in a browser. The default configurations do not allow `noscript` elements and are not vulnerable. This issue only affects users who are using a custom config that adds `noscript` to the element allowlist. This issue has been patched in version 6.0.1. Users who are unable to upgrade can prevent this issue by using one of Sanitize's default configs or by ensuring that their custom config does not include `noscript` in the element allowlist.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2023-23627
- cpe:2.3:a:sanitize_project:sanitize:*:*:*:*:*:ruby:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-23627
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-23627
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST | |
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
GitHub, Inc. |
CWE ids for CVE-2023-23627
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-23627
-
https://github.com/rgrove/sanitize/security/advisories/GHSA-fw3g-2h3j-qmm7
Improper neutralization of `noscript` element content may allow XSS in Sanitize · Advisory · rgrove/sanitize · GitHubMitigation;Release Notes;Third Party Advisory
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