What’s Vulnerable › Vulnerabilities

CVE-2026-60119: Hi.Events < 1.11.0 XSS via Event Title JSON.stringify Injection

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-14 · updated 2026-10-24
• Weakness: CWE-862

Description

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.

Affected products

• HiEventsDev Hi.Events: before 1.11.0 — fixed in 1.11.0

How to fix

Upgrade to a fixed version: HiEventsDev Hi.Events 1.11.0. Check the vendor advisory for mitigations.

References

• 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

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