CVE-2020-36406

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Source
https://cve.org/CVERecord?id=CVE-2020-36406
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36406.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-36406
Published
2021-07-01T03:15:08Z
Modified
2026-04-11T23:34:05.677188Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

uWebSockets 18.11.0 and 18.12.0 has a stack-based buffer overflow in uWS::TopicTree::trimTree (called from uWS::TopicTree::unsubscribeAll). NOTE: the vendor's position is that this is "a minor issue or not even an issue at all" because the developer of an application (that uses uWebSockets) should not be allowing the large number of triggered topics to accumulate

References

Affected packages

Git / github.com/unetworking/uwebsockets

Affected ranges

Type
GIT
Repo
https://github.com/unetworking/uwebsockets
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
03fca626a95130ab80f86adada54b29d27242759
Type
GIT
Repo
https://github.com/unetworking/uwebsockets.js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
bd720c90ff8b90f478d918c1cbe3f1dcbc3a765b
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
8cf8b315f10a31428c007b954f10e8c577858e6f
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "18.11.0"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "18.12.0"
        }
    ]
}

Affected versions

v0.*
v0.0.1
v0.0.2
v0.0.3
v0.0.8
v0.0.9
v0.1.0
v0.15
v0.15.1
v0.15.2
v0.15.3
v0.15.4
v0.15.5
v0.15.6
v0.15.7
v0.15a1
v0.15a2
v0.15a3
v0.15a4
v0.15a5
v0.15b1
v0.15b2
v0.15b3
v0.15rc1
v0.15rc2
v0.15rc3
v0.15rc4
v0.15rc5
v0.16.0
v0.16.0a1
v0.16.0a2
v0.16.0a3
v0.16.0a4
v0.16.0a5
v0.16.0a6
v0.16.0b1
v0.16.0b2
v0.16.0b3
v0.16.1
v0.16.2
v0.16.3
v0.16.4
v0.16.5
v0.17.0
v0.17.0a1
v0.17.0a3
v0.17.0a4
v0.17.0a5
v0.17.0rc1
v0.17.1
v0.17.2
v0.17.3
v0.17.4
v0.17.5
v0.17.6
v0.17a2
v0.2.0
v0.2.1
Other
v015b4
v15.*
v15.0.0
v15.1.0
v15.10.0
v15.11.0
v15.2.0
v15.3.0
v15.4.0
v15.5.0
v15.6.0
v15.7.0
v15.8.0
v15.9.0
v16.*
v16.0.0
v16.1.0
v16.2.0
v16.3.0
v16.4.0
v16.5.0
v17.*
v17.0.0
v17.1.0
v17.2.0
v17.3.0
v17.4.0
v17.5.0
v17.6.0
v18.*
v18.0.0
v18.1.0
v18.10.0
v18.11.0
v18.12.0
v18.2.0
v18.3.0
v18.4.0
v18.5.0
v18.6.0
v18.7.0
v18.8.0
v18.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36406.json"
vanir_signatures_modified 
"2026-04-11T23:34:05Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "242400160302654976838636114013130348944",
                "295049045437580870781025044026275397401",
                "287117170082526816664863920027744284270",
                "223722998559477343369752829430767293699",
                "171000385846438931233831831140994366759",
                "190018631035813668823721045046569962237",
                "29213114836601412550040752566803033794",
                "140189795200095490648337107716233098455",
                "170518001614071505926682638890178875412",
                "22465007570477456448114770113492147535",
                "60726238287194210456697155178093995689",
                "301298859497915507458384854415144095244",
                "29908992328291758395176597937319127089",
                "4624316714275193198802077167589379233"
            ]
        },
        "source": "https://github.com/unetworking/uwebsockets/commit/03fca626a95130ab80f86adada54b29d27242759",
        "id": "CVE-2020-36406-2b07523f",
        "signature_type": "Line",
        "target": {
            "file": "src/TopicTree.h"
        }
    }
]