CVE-2018-3739
CVE-2018-3739 is a critical-severity vulnerability in Https-proxy-agent Project Https-proxy-agent with a CVSS 3.x base score of 9.1. 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-125.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 6.4
- EPSS exploit prediction: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Https-proxy-agent Project Https-proxy-agent
- Published:
- Last modified:
Description
https-proxy-agent before 2.1.1 passes auth option to the Buffer constructor without proper sanitization, resulting in DoS and uninitialized memory leak in setups where an attacker could submit typed input to the 'auth' parameter (e.g. JSON).
Frequently asked questions
- What is CVE-2018-3739?
- https-proxy-agent before 2.1.1 passes auth option to the Buffer constructor without proper sanitization, resulting in DoS and uninitialized memory leak in setups where an attacker could submit typed input to the 'auth' parameter (e.g. JSON).
- How severe is CVE-2018-3739?
- CVE-2018-3739 has a CVSS 3.x base score of 9.1, rated critical 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 high.
- Is CVE-2018-3739 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-3739?
- CVE-2018-3739 affects Https-proxy-agent Project Https-proxy-agent. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-3739?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-3739 published?
- CVE-2018-3739 was published on 2018-06-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:https-proxy-agent_project:https-proxy-agent:*:*:*:*:*:node.js:*:*
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