What is CVE-2023-2259?

CVE-2023-2259 is a high-severity vulnerability in Alf, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 7.2/10. Published 2023-04-24.

How severe is CVE-2023-2259?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Alf

CVE-2023-2259

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

Published 2023-04-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Alf
Alfio-Event Alfio-Event/alf.io — versions unspecified

Weakness classification (CWE)

References

huntr.dev/bounties/e753bce0-ce82-463b-b344-2f67b39b60ff (Exploit, Third Party Advisory)
github.com/alfio-event/alf.io/commit/94e2923a317452e337393789c9f3192dfc1ddac2 (Patch)

Frequently asked questions

What is CVE-2023-2259?: CVE-2023-2259 is a high-severity vulnerability in Alf, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 7.2/10. Published 2023-04-24.
How severe is CVE-2023-2259?: High severity. CVSS v3 base score is 7.2 out of 10.