MEDIUMVulnerability
CVE-2026-73628
Serendipity versions >= 2.3.5 and <= 2.6.0 contain a reflected cross-site scripting vulnerability in the search clean-URL route (/search/<term>). In include/functions_routing.inc.php serveSearch(), the sanitisation pipeline runs urldecode() after HTML-encoding, so a single URL-encoded HTML payload survives strip_tags() and htmlspecialchars() and is then decoded back into live HTML in the page. A crafted search link can execute arbitrary JavaScript in the victim's browser. Fixed in 2.6.1.
Properties
- severity
- MEDIUM
- score
- 6.1
- epss_score
- 0.00155
- cve_id
- CVE-2026-73628
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- published_at
- 2026-08-13T12:17:28.183
- last_modified
- 2026-09-09T20:35:08.537
- epss_percentile
- 0.04915
Related Entities (3)
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
DESCRIBED_BY (1)
→[Source]NVD
Explore deeper with Ninja Signal's threat intelligence graph