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No exploitation reportedFix available

CVE-2018-3739

No exploitation reported by the sources we read.

  • Published2018-06-07
  • Fixed in2.2.0
  • WeaknessCWE-125 · CWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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).

Timeline

dates in UTC
  1. 2018-06-0702:29CVE publishedNVD

Versions per branch

NVD · OSV
Https-proxy-agent project https-proxy-agent
BranchAffectedFixed in
2.2< 2.2.02.2.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • https-proxy-agentTuxCare:npmfrom 1.0.0-tuxcare.0 · fixed in 1.0.0-tuxcare.1
  • jitsucom-jitsuWolfiall versions · fixed in 0
  • jitsucom-jitsuChainguardall versions · fixed in 0

Vendor advisories

  • CVE-2018-3739 Red Hat Product Security6 known affected

    nodejs-https-proxy-agent: Unsanitized options passed to Buffer() allow for denial of service

    quay/quay-rhel8 as a component of Red Hat Quay 3 · rh-nodejs8-nodejs as a component of Red Hat Software Collections · rh-nodejs8-nodejs-devel as a component of Red Hat Software Collections · +3 more

Full record on NVD

Fix

  1. Update Https-proxy-agent project https-proxy-agent to 2.2.0
  2. No fix available, says the vendor Red Hat Product Security CVE-2018-3739 · 1 productFix deferred
  3. No fix planned, says the vendor Red Hat Product Security CVE-2018-3739 · 5 productsOut of support scope

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.09.1read 2026-10-23
  • NVDCVSS 2.06.4read 2026-10-23
  • CNAweakness (CWE)CWE-400known since 2026-10-23
  • NVDweakness (CWE)CWE-125read 2026-10-23
  • FIRST EPSSEPSS score1.7 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryCRITICAL2020-06-16

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
2018-06-07
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8g7p-74h8-hg48

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).

Is CVE-2018-3739 actively exploited?

Active exploitation of CVE-2018-3739 has not been confirmed. Its EPSS score was 1.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-3739?

CVE-2018-3739 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

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