How severe is CVE-2023-34795?

CVE-2023-34795 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-34795 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34795?

CVE-2023-34795 affects Xlsxio Project Xlsxio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34795?

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-2023-34795 published?

CVE-2023-34795 was published on 2023-06-16 and last updated on 2026-06-17.

CVE-2023-34795

CVE-2023-34795 is a high-severity vulnerability in Xlsxio Project Xlsxio with a CVSS 3.x base score of 7.8. 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-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Xlsxio Project Xlsxio
Published: 2023-06-16
Last modified: 2026-06-17

Description

xlsxio v0.1.2 to v0.2.34 was discovered to contain a free of uninitialized pointer in the xlsxioread_sheetlist_close() function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted XLSX file.

Frequently asked questions

What is CVE-2023-34795?: xlsxio v0.1.2 to v0.2.34 was discovered to contain a free of uninitialized pointer in the xlsxioread_sheetlist_close() function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted XLSX file.
How severe is CVE-2023-34795?: CVE-2023-34795 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-34795 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34795?: CVE-2023-34795 affects Xlsxio Project Xlsxio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34795?: 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-2023-34795 published?: CVE-2023-34795 was published on 2023-06-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xlsxio_project:xlsxio:*:*:*:*:*:*:*:*

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