CVE-2021-32014: SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (CPU consumption) via a c

Q: How do I fix CVE-2021-32014?

sheetjs: upgrade to newer than 0.16.9; sheetjs pro: upgrade to newer than 0.16.9; rest data services: upgrade to 21.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-32014 being exploited?

CVE-2021-32014 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32014 affect?

CVE-2021-32014 affects sheetjs, sheetjs pro, rest data services. Severity is medium (CVSS 5.5). SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (CPU consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js.

Q: How urgent is CVE-2021-32014?

Priority 34/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADEUPGRADEUPGRADE

CVE-2021-32014 is a medium-severity flaw (CVSS 5.5) affecting sheetjs, sheetjs pro, rest data services. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-400
Published	2021-07-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: oracle · sheetjs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-19 14:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

sheetjs sheetjs UPGRADE

Affected: <= 0.16.9

Fixed in: newer than 0.16.9

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls sheetjs

2. UPGRADE to newer than 0.16.9

npm install sheetjs@">0.16.9"

sheetjs sheetjs pro UPGRADE

Affected: <= 0.16.9

Fixed in: newer than 0.16.9

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls sheetjs-pro

2. UPGRADE to newer than 0.16.9

npm install sheetjs-pro@">0.16.9"

oracle rest data services UPGRADE

Affected: < 21.2.4

Fixed in: 21.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rest-data-services || rpm -q rest-data-services || rest-data-services --version

2. UPGRADE to 21.2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rest-data-services

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rest-data-services

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32014?

sheetjs: upgrade to newer than 0.16.9; sheetjs pro: upgrade to newer than 0.16.9; rest data services: upgrade to 21.2.4. Exact commands for each OS are on this page.

Is CVE-2021-32014 being exploited?

CVE-2021-32014 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32014 affect?

CVE-2021-32014 affects sheetjs, sheetjs pro, rest data services. Severity is medium (CVSS 5.5). SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (CPU consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js.

How urgent is CVE-2021-32014?

Priority 34/100. No elevated risk signals yet.

Related CVEs

CVE-2023-30533 HIGH 7.8 UPGRADE SheetJS Community Edition before 0.19.3 allows Prototype Pollution via a crafted file
CVE-2021-32013 MEDIUM 5.5 UPGRADE UPGRADE SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via
CVE-2021-32012 MEDIUM 5.5 UPGRADE UPGRADE SheetJS and SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via

References

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