CVE-2024-45299: alf.io's preloaded data as json is not escaped correctly

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-09-06 · updated 2026-06-17
Weakness: CWE-116

Description

alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5, the preloaded data as json is not escaped correctly, the administrator / event admin could break their own install by inserting non correctly escaped text. The Content-Security-Policy directive blocks any potential script execution. The administrator or event administrator can override the texts for customization purpose. The texts are not properly escaped. Version 2.0-M5 fixes this issue.

Affected products

alfio-event alf.io: before 2.0-m5 — fixed in 2.0-m5

How to fix

Upgrade to a fixed version: alfio-event alf.io 2.0-m5. Check the vendor advisory for mitigations.

References

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