What is CVE-2023-2258?

CVE-2023-2258 is a high-severity vulnerability in Alf, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 8.8/10. Published 2023-04-24.

How severe is CVE-2023-2258?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Alf

CVE-2023-2258

Improper Neutralization of Formula Elements in a CSV File 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 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

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

Weakness classification (CWE)

CWE-1236 — Improper Neutralization of Formula Elements in a CSV File

References

Frequently asked questions

What is CVE-2023-2258?: CVE-2023-2258 is a high-severity vulnerability in Alf, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 8.8/10. Published 2023-04-24.
How severe is CVE-2023-2258?: High severity. CVSS v3 base score is 8.8 out of 10.