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TI-2026-42836 Aliases CVE-2026-60119

Hi.Events < 1.11.0 XSS via Event Title JSON.stringify Injection

Priority LOW 23CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00298 22nd percentileScored 2026-11-07
Fix Fixed Hi.Events (HiEventsDev): 1.11.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
HiEventsDevHi.Eventsbefore 1.11.01.11.0Patch availableCNA
  • Hi.Events VendorHiEventsDev Affected before 1.11.0 Fixed in 1.11.0 Patch available CNA

Remediation

  • Fix · CNA Hi.Events (HiEventsDev) Fixed in 1.11.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    HiEventsDev Hi.Events 1.11.0

    2 records Highest priority Priority HIGH 1 HIGH, 1 LOW

    Other records, highest priority first

    • TI-2026-42835 Hi.Events < 1.11.0 Hidden Ticket Enumeration via Order Creation EndpointPriority HIGH 70
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-60119

References

Patch 1

Advisory 1

Other 2

  • TI-2026-42835 Hi.Events < 1.11.0 Hidden Ticket Enumeration via Order Creation Endpoint CVSS 4.0MEDIUM 6.9
  • TI-2026-41726 Hi.Events 1.9.0 - Unauthenticated Attendee PII Exposure via Check-in List short_id CVSS 4.0HIGH 8.3
  • TI-2026-53674 Hi.Events before 1.11.1-beta Server-Side Request Forgery via Unvalidated Webhook Redirects CVSS 4.0HIGH 8.4
  • TI-2026-41725 Hi.Events 1.9.0 - Promo Code Max-Usage Bypass via Asynchronous Job Race Condition CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences