CVE-2026-48822
- Source
- https://cve.org/CVERecord?id=CVE-2026-48822
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48822.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-48822
- Aliases
-
- GHSA-2hgr-63wv-x462
- Downstream
- Published
- 2026-06-17T19:59:34.277Z
- Modified
- 2026-07-08T08:13:37.948690109Z
- Severity
-
- 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- Shaarli has Stored Cross-Site Scripting (XSS) via Markdown Reference Links
- Details
-
Shaarli is a personal bookmarking service. Versions 0.16.1 and prior contain a stored Cross-Site Scripting (XSS) vulnerability in the Markdown-to-HTML conversion process used in the Bookmark Description field. An authenticated user can inject a malicious javascript: URI inside a Markdown link. The vulnerability originates in the filterProtocols method within BookmarkMarkdownFormatter.php.This method attempts to sanitize Markdown links by filtering dangerous protocols (such as javascript:) before rendering. It uses the following regular expression: (#]((.*?))#is). This regex is designed to detect inline Markdown links, but it fails to detect Markdown reference-style links because reference-style links are resolved by the Markdown parser after preprocessing. The filterProtocols method never inspects the actual URL used in these references and as a result, an attacker can supply a javascript: URI inside a reference definition. This issue has been fixed in version 0.16.2.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48822.json", "cwe_ids": [ "CWE-79" ], "cna_assigner": "GitHub_M" }- References