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01 Record

CVE-2020-7774

Prototype Pollution

HighPUBLISHEDCNA: snyk
CNA base score7.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P
View raw JSON

02 Description

Prototype Pollution

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
69.58% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 99.3% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-11-17 12:30Z5 YR AGO
Last updated
2024-09-16 20:13Z2 YR AGO
Reserved
2020-01-21
Assigning CNA
snyk
Record state
PUBLISHED
Severity
High (CVSS 7.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P
Weaknesses
  • CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant
  • CWE-915Improperly Controlled Modification of Dynamically-Determined Object AttributesBase
Data version
5.1
Document digest
293c486f37418838c505814aff0bb3f54fe03c1d464abd11a8f424cd2f906f26

05 Affected products

VendorProductVersionsPlatforms
n/ay18n< 5.0.5—

06 References

07 Fixed in

AlmaLinux 8

  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.18.3-1.module_el8.3.0+2023+d2377ea3
    • Affected before 1.18.3-1.module_el8.3.0+2047+b07ac28e
    • Affected before 2.0.3-1.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 17-3.module_el8.3.0+2023+d2377ea3
    • Affected before 17-3.module_el8.4.0+2224+b07ac28e
    • Affected before 17-3.module_el8.4.0+2521+c668cc9f
    • Affected before 23-3.module_el8.4.0+2522+3bd42762
    • Affected before 23-3.module_el8.5.0+254+b4526b16

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • nodejs-nodemon
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.18.3-1.module_el8.3.0+2023+d2377ea3
    • Affected before 1.18.3-1.module_el8.3.0+2047+b07ac28e
    • Affected before 2.0.3-1.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging
    Fixed

    A version is affected if any line below covers it.

    • Affected before 17-3.module_el8.3.0+2023+d2377ea3
    • Affected before 17-3.module_el8.4.0+2224+b07ac28e
    • Affected before 17-3.module_el8.4.0+2521+c668cc9f
    • Affected before 23-3.module_el8.4.0+2522+3bd42762
    • Affected before 23-3.module_el8.5.0+254+b4526b16

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • node-y18n
    Fixed in 4.0.0-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • node-y18n
    Fixed in 4.0.0-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • node-y18n
    Fixed in 4.0.0-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • node-y18n
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • node-y18n
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • node-y18n
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.