How severe is CVE-2017-16035?

CVE-2017-16035 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-16035 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16035?

CVE-2017-16035 affects Hubspot Hubl-server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16035?

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-2017-16035 published?

CVE-2017-16035 was published on 2018-06-04 and last updated on 2026-06-17.

CVE-2017-16035

CVE-2017-16035 is a high-severity vulnerability in Hubspot Hubl-server with a CVSS 3.x base score of 8.1. 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-319.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Hubspot Hubl-server
Published: 2018-06-04
Last modified: 2026-06-17

Description

The hubl-server module is a wrapper for the HubL Development Server. During installation hubl-server downloads a set of dependencies from api.hubapi.com. It appears in the code that these files are downloaded over HTTPS however the api.hubapi.com endpoint redirects to a HTTP url. Because of this behavior an attacker with the ability to man-in-the-middle a developer or system performing a package installation could compromise the integrity of the installation.

Frequently asked questions

What is CVE-2017-16035?: The hubl-server module is a wrapper for the HubL Development Server. During installation hubl-server downloads a set of dependencies from api.hubapi.com. It appears in the code that these files are downloaded over HTTPS however the api.hubapi.com endpoint redirects to a HTTP url. Because of this behavior an attacker with the ability to man-in-the-middle a developer or system performing a package installation could compromise the integrity of the installation.
How severe is CVE-2017-16035?: CVE-2017-16035 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-16035 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16035?: CVE-2017-16035 affects Hubspot Hubl-server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16035?: 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-2017-16035 published?: CVE-2017-16035 was published on 2018-06-04 and last updated on 2026-06-17.

References

https://nodesecurity.io/advisories/334

Affected products (1)

cpe:2.3:a:hubspot:hubl-server:*:*:*:*:*:node.js:*:*

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