How severe is CVE-2023-2258?

CVE-2023-2258 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-2258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2258?

CVE-2023-2258 affects Alf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2258?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-2258 published?

CVE-2023-2258 was published on 2023-04-24 and last updated on 2026-06-17.

CVE-2023-2258

CVE-2023-2258 is a high-severity vulnerability in Alf with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1236.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1236
Affected product: Alf
Published: 2023-04-24
Last modified: 2026-06-17

Description

Improper Neutralization of Formula Elements in a CSV File in GitHub repository alfio-event/alf.io prior to 2.0-M4-2304.

Frequently asked questions

What is 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.
How severe is CVE-2023-2258?: CVE-2023-2258 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-2258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2258?: CVE-2023-2258 affects Alf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2258?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-2258 published?: CVE-2023-2258 was published on 2023-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:alf:alf:*:*:*:*:*:*:*:*

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