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No exploitation reportedFix available

CVE-2020-36048

No exploitation reported by the sources we read.

  • Published2021-01-08
  • Fixed in3.6.0
  • WeaknessCWE-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

Engine.IO before 4.0.0 allows attackers to cause a denial of service (resource consumption) via a POST request to the long polling transport.

Timeline

dates in UTC
  1. 2021-01-0800:15CVE publishedNVD

Versions per branch

OSV · NVD
engine.io
BranchAffectedFixed in
3.6< 3.6.03.6.0
Socket engine.io
BranchAffectedFixed in
4.0< 4.0.04.0.0

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

  • engine.ioTuxCare:npmfrom 3.2.1-tuxcare.0 · fixed in 3.2.1-tuxcare.2
  • engine.ioTuxCare:npmfrom 3.1.5-tuxcare.0 · fixed in 3.1.5-tuxcare.1
  • engine.ioTuxCare:npmfrom 1.8.3-tuxcare.0 · fixed in 1.8.3-tuxcare.1
  • engine.ioTuxCare:npmfrom 1.8.5-tuxcare.0 · fixed in 1.8.5-tuxcare.1
  • js-jqueryAzure Linux:3all versions · no fixed version listed

Vendor advisories

  • CVE-2020-36048 Red Hat Product Security2 known affected

    yarnpkg-socket.io/engine.io: allows attackers to cause a denial of service (resource consumption) via a POST request to the long polling transport

    quay/quay-builder-qemu-rhcos-rhel8 as a component of Red Hat Quay 3 · quay/quay-rhel8 as a component of Red Hat Quay 3

Full record on NVD

Fix

  1. Update engine.io to 3.6.0
  2. No fix available, says the vendor Red Hat Product Security CVE-2020-36048 · 2 productsFix deferred

Advisories and patches

Detection

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

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2021-01-08
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-j4f2-536g-r55m

Frequently asked questions

What is CVE-2020-36048?

Engine.IO before 4.0.0 allows attackers to cause a denial of service (resource consumption) via a POST request to the long polling transport.

Is CVE-2020-36048 actively exploited?

Active exploitation of CVE-2020-36048 has not been confirmed. Its EPSS score was 3.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-36048?

CVE-2020-36048 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record