Hi.Events before 1.11.0 contains a cross-site scripting vulnerability that allows authenticated attackers with event creation or edit permissions to inject arbitrary HTML and JavaScript by embedding a malicious event title containing the </script> sequence, which is not escaped by JSON.stringify() when embedded in inline script tags. Attackers can craft an event title that breaks out of the script context in the application/ld+json structured data block or server-side rehydrated state, causing the payload to execute in the browser of any user who views the public event page, including unauthenticated visitors and authenticated administrators.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 5.1NVD modified 2026-10-24 21:10
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 6
- https://github.com/HiEventsDev/Hi.Events/commit/1e36b070771801ed7113255ef7b3a7f271a2a794
- https://github.com/HiEventsDev/Hi.Events/pull/1260
- https://github.com/HiEventsDev/Hi.Events/releases/tag/v.1.11.0-beta
- https://github.com/HiEventsDev/Hi.Events/security/advisories/GHSA-2ggx-79g6-2jmj
- https://www.vulncheck.com/advisories/hi-events-beta-xss-via-event-title-json-stringify-injection
- https://github.com/HiEventsDev/Hi.Events/security/advisories/GHSA-2ggx-79g6-2jmj