How severe is CVE-2023-7101?

CVE-2023-7101 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-2023-7101 being actively exploited?

Yes. CVE-2023-7101 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-01-02, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2023-7101?

CVE-2023-7101 primarily affects Jmcnamara Spreadsheet. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-7101?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2023-7101 have an EU (EUVD) identifier?

Yes. CVE-2023-7101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59285. It is also flagged as exploited in the EUVD (since 2024-01-02).

When was CVE-2023-7101 published?

CVE-2023-7101 was published on 2023-12-24 and last updated on 2026-06-17.

CVE-2023-7101

CVE-2023-7101 is a high-severity vulnerability in Jmcnamara Spreadsheet with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2024-01-02). The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2024-01-02)
EU (EUVD) id: EUVD-2023-59285
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2024-01-02)
Weakness: CWE-94
Affected product: Jmcnamara Spreadsheet
Published: 2023-12-24
Last modified: 2026-06-17

Description

Spreadsheet::ParseExcel version 0.65 is a Perl module used for parsing Excel files. Spreadsheet::ParseExcel is vulnerable to an arbitrary code execution (ACE) vulnerability due to passing unvalidated input from a file into a string-type “eval”. Specifically, the issue stems from the evaluation of Number format strings (not to be confused with printf-style format strings) within the Excel parsing logic.

Frequently asked questions

What is CVE-2023-7101?: Spreadsheet::ParseExcel version 0.65 is a Perl module used for parsing Excel files. Spreadsheet::ParseExcel is vulnerable to an arbitrary code execution (ACE) vulnerability due to passing unvalidated input from a file into a string-type “eval”. Specifically, the issue stems from the evaluation of Number format strings (not to be confused with printf-style format strings) within the Excel parsing logic.
How severe is CVE-2023-7101?: CVE-2023-7101 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-2023-7101 being actively exploited?: Yes. CVE-2023-7101 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-01-02, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2023-7101?: CVE-2023-7101 primarily affects Jmcnamara Spreadsheet. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-7101?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2023-7101 have an EU (EUVD) identifier?: Yes. CVE-2023-7101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-59285. It is also flagged as exploited in the EUVD (since 2024-01-02).
When was CVE-2023-7101 published?: CVE-2023-7101 was published on 2023-12-24 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:jmcnamara:spreadsheet\:\:parseexcel:*:*:*:*:*:perl:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

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