How severe is CVE-2019-10773?

CVE-2019-10773 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-2019-10773 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-10773?

CVE-2019-10773 affects Yarnpkg Yarn. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-10773?

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-2019-10773 published?

CVE-2019-10773 was published on 2019-12-16 and last updated on 2026-06-17.

CVE-2019-10773

CVE-2019-10773 is a high-severity vulnerability in Yarnpkg Yarn 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-59.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Yarnpkg Yarn
Published: 2019-12-16
Last modified: 2026-06-17

Description

In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted "bin" keys. Existing files could be overwritten depending on the current user permission set.

Frequently asked questions

What is CVE-2019-10773?: In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted "bin" keys. Existing files could be overwritten depending on the current user permission set.
How severe is CVE-2019-10773?: CVE-2019-10773 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-2019-10773 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-10773?: CVE-2019-10773 affects Yarnpkg Yarn. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-10773?: 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-2019-10773 published?: CVE-2019-10773 was published on 2019-12-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:yarnpkg:yarn:*:*:*:*:*:*:*:*

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