How severe is CVE-2019-13173?

CVE-2019-13173 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-13173 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13173?

CVE-2019-13173 affects Fstream Project Fstream. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13173?

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-2019-13173 published?

CVE-2019-13173 was published on 2019-07-02 and last updated on 2026-06-17.

CVE-2019-13173

CVE-2019-13173 is a high-severity vulnerability in Fstream Project Fstream with a CVSS 3.x base score of 7.5. 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-59.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 6.4
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Fstream Project Fstream
Published: 2019-07-02
Last modified: 2026-06-17

Description

fstream before 1.0.12 is vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink, will overwrite the system's file with the contents of the extracted file. The fstream.DirWriter() function is vulnerable.

Frequently asked questions

What is CVE-2019-13173?: fstream before 1.0.12 is vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink, will overwrite the system's file with the contents of the extracted file. The fstream.DirWriter() function is vulnerable.
How severe is CVE-2019-13173?: CVE-2019-13173 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-13173 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13173?: CVE-2019-13173 affects Fstream Project Fstream. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13173?: 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-2019-13173 published?: CVE-2019-13173 was published on 2019-07-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fstream_project:fstream:*:*:*:*:*:node.js:*:*

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