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TI-2023-02118 Aliases CVE-2023-2259GHSA-4w64-j7cg-53xc

Improper Neutralization of Special Elements Used in a Template Engine in alfio-event/alf.io

Priority HIGH 67CWE-1336Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-1336.

Summary

Improper Neutralization of Special Elements Used in a Template Engine in GitHub repository alfio-event/alf.io prior to 2.0-M4-2304.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01089 65th percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed alfio-event/alf.io (alfio-event): 2.0-M4-2304

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
alfio-eventalfio-event/alf.iobefore 2.0-M4-23042.0-M4-2304Patch availableCNA
  • alfio-event/alf.io Vendoralfio-event Affected before 2.0-M4-2304 Fixed in 2.0-M4-2304 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:alf:alf:*:*:*:*:*:*:*:*before 2.0-m4-2304Vulnerablealfio-event
  • cpe:2.3:a:alf:alf:*:*:*:*:*:*:*:* Versions before 2.0-m4-2304 Vulnerable ·alfio-event

Remediation

  • Fix · CNA alfio-event/alf.io (alfio-event) Fixed in 2.0-M4-2304

Fixed in the same release

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

  • Release ·

    alfio-event/alf.io 2.0-M4-2304

    3 records Highest priority Priority HIGH 1 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2023-02119 Authorization Bypass Through User-Controlled Key in alfio-event/alf.ioPriority MEDIUM 42
    • TI-2023-02117 Improper Neutralization of Formula Elements in a CSV File in alfio-event/alf.ioPriority MEDIUM 42
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-2259
  2. 2026-10-03 Alias added: GHSA-4w64-j7cg-53xc

References

Exploit 1

Patch 1

  • TI-2026-27611 alf.io has an Authenticated RCE via Extension Script Sandbox Escape CVSS 3.1CRITICAL 9.1
  • TI-2024-16863 IDOR Vulnerability: Allowing Organization Owner to view the other Organizations API KEY and USERS CVSS 3.1HIGH 8.8
  • TI-2024-30371 Bypassing promo code limitations with race conditions CVSS 3.1HIGH 7.5
  • TI-2024-16862 IDOR make user can read e-mail log sent by other events CVSS 3.1HIGH 7.2
  • TI-2024-30370 alf.io's preloaded data as json is not escaped correctly CVSS 3.1MEDIUM 6.5
  • TI-2024-16855 Cross-Site Scripting (XSS) via File Upload in Alf.io CVSS 3.1MEDIUM 4.8
See all 9 →

Sources

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