How severe is CVE-2021-32012?

CVE-2021-32012 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-32012 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32012?

CVE-2021-32012 primarily affects Sheetjs Project Sheetjs. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-32012?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-32012 published?

CVE-2021-32012 was published on 2021-07-19 and last updated on 2026-06-17.

CVE-2021-32012

CVE-2021-32012 is a medium-severity vulnerability in Sheetjs Project Sheetjs with a CVSS 3.x base score of 5.5. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Sheetjs Project Sheetjs
Published: 2021-07-19
Last modified: 2026-06-17

Description

SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js (issue 1 of 2).

Frequently asked questions

What is CVE-2021-32012?: SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js (issue 1 of 2).
How severe is CVE-2021-32012?: CVE-2021-32012 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-32012 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32012?: CVE-2021-32012 primarily affects Sheetjs Project Sheetjs. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-32012?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32012 published?: CVE-2021-32012 was published on 2021-07-19 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:sheetjs_project:sheetjs:*:*:*:*:*:node.js:*:*
cpe:2.3:a:sheetjs_project:sheetjs_pro:*:*:*:*:*:node.js:*:*
cpe:2.3:a:oracle:rest_data_services:*:*:*:*:*:*:*:*

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