How severe is CVE-2017-14849?

CVE-2017-14849 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 high, integrity none, and availability none.

Is CVE-2017-14849 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 53% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-14849?

CVE-2017-14849 affects Nodejs Node.js. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-14849?

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-2017-14849 published?

CVE-2017-14849 was published on 2017-09-28 and last updated on 2026-06-17.

CVE-2017-14849

CVE-2017-14849 is a high-severity vulnerability in Nodejs Node.js with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 53% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 53% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Nodejs Node.js
Published: 2017-09-28
Last modified: 2026-06-17

Description

Node.js 8.5.0 before 8.6.0 allows remote attackers to access unintended files, because a change to ".." handling was incompatible with the pathname validation used by unspecified community modules.

Frequently asked questions

What is CVE-2017-14849?: Node.js 8.5.0 before 8.6.0 allows remote attackers to access unintended files, because a change to ".." handling was incompatible with the pathname validation used by unspecified community modules.
How severe is CVE-2017-14849?: CVE-2017-14849 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 high, integrity none, and availability none.
Is CVE-2017-14849 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 53% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-14849?: CVE-2017-14849 affects Nodejs Node.js. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-14849?: 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-2017-14849 published?: CVE-2017-14849 was published on 2017-09-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nodejs:node.js:8.5.0:*:*:*:*:*:*:*

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