How severe is CVE-2023-2259?

CVE-2023-2259 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-2259 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2259?

CVE-2023-2259 affects Alf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2259?

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-2023-2259 published?

CVE-2023-2259 was published on 2023-04-24 and last updated on 2026-06-17.

CVE-2023-2259

CVE-2023-2259 is a high-severity vulnerability in Alf with a CVSS 3.x base score of 7.2. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Alf
Published: 2023-04-24
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2023-2259?: CVE-2023-2259 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-2259 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2259?: CVE-2023-2259 affects Alf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2259?: 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-2023-2259 published?: CVE-2023-2259 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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