CVE-2020-5258: In affected versions of dojo (NPM package), the deepCopy method is vulnerable to Prototype Pollution

This week

HIGH 7.7WATCHLISTUPGRADEMITIGATEDOWNGRADE

CVE-2020-5258 is a high-severity flaw (CVSS 7.7) affecting dojo, debian linux, communications application session controller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In affected versions of dojo (NPM package), the deepCopy method is vulnerable to Prototype Pollution. Prototype Pollution refers to the ability to inject properties into existing JavaScript language construct prototypes, such as objects. An attacker manipulates these attributes to overwrite, or pollute, a JavaScript application object prototype of the base object by injecting other values. This has been patched in versions 1.12.8, 1.13.7, 1.14.6,

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	4.0% (top 9%)
CISA exploited list	No
Weakness	CWE-94, CWE-1321
Published	2020-03-10
Last modified	2026-10-08

Publisher (CNA): GitHub, Inc. · Vendor: debian · linuxfoundation · oracle

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-03-10 18:15 UTCPublished CVE record published
2026-10-08 22:17 UTCUpdated Record last modified

linuxfoundation dojo UPGRADE

Affected: < 1.11.10 · >= 1.12.0 and < 1.12.8 · >= 1.13.0 and < 1.13.7 · >= 1.14.0 and < 1.14.6 · >= 1.15.0 and < 1.15.3 · >= 1.16.0 and < 1.16.2

Fixed in: 1.11.10, 1.12.8, 1.13.7, 1.14.6, 1.15.3, 1.16.2

Safe to downgrade to: a release before 1.12.0

1. Check installed version

npm ls dojo

2. UPGRADE to 1.11.10

npm install dojo@">=1.11.10"

3. If no update is available yet, DOWNGRADE to a release before 1.12.0

npm view dojo versions npm install dojo@"<1.12.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

oracle communications application session controller DOWNGRADE

Affected: 3.9.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.9.0

1. Check installed version

apt-cache policy communications-application-session-controller || rpm -q communications-application-session-controller || communications-application-session-controller --version

2. No fixed release: DOWNGRADE to a release before 3.9.0 (Debian / Ubuntu)

apt-cache madison communications-application-session-controller sudo apt install communications-application-session-controller=<VERSION_BEFORE_3.9.0> sudo apt-mark hold communications-application-session-controller

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list communications-application-session-controller sudo dnf downgrade communications-application-session-controller-<VERSION_BEFORE_3.9.0> sudo dnf versionlock add communications-application-session-controller

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

oracle communications policy management DOWNGRADE

Affected: 12.5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.5.0

1. Check installed version

apt-cache policy communications-policy-management || rpm -q communications-policy-management || communications-policy-management --version

2. No fixed release: DOWNGRADE to a release before 12.5.0 (Debian / Ubuntu)

apt-cache madison communications-policy-management sudo apt install communications-policy-management=<VERSION_BEFORE_12.5.0> sudo apt-mark hold communications-policy-management

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list communications-policy-management sudo dnf downgrade communications-policy-management-<VERSION_BEFORE_12.5.0> sudo dnf versionlock add communications-policy-management

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

oracle communications pricing design center DOWNGRADE

Affected: 12.0.0.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.0.0.3.0

1. Check installed version

apt-cache policy communications-pricing-design-center || rpm -q communications-pricing-design-center || communications-pricing-design-center --version

2. No fixed release: DOWNGRADE to a release before 12.0.0.3.0 (Debian / Ubuntu)

apt-cache madison communications-pricing-design-center sudo apt install communications-pricing-design-center=<VERSION_BEFORE_12.0.0.3.0> sudo apt-mark hold communications-pricing-design-center

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list communications-pricing-design-center sudo dnf downgrade communications-pricing-design-center-<VERSION_BEFORE_12.0.0.3.0> sudo dnf versionlock add communications-pricing-design-center

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

oracle documaker UPGRADE

Affected: >= 12.6.0 and <= 12.6.4

Fixed in: newer than 12.6.4

Safe to downgrade to: a release before 12.6.0

1. Check installed version

apt-cache policy documaker || rpm -q documaker || documaker --version

2. UPGRADE to newer than 12.6.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade documaker

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade documaker

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 12.6.0 (Debian / Ubuntu)

apt-cache madison documaker sudo apt install documaker=<VERSION_BEFORE_12.6.0> sudo apt-mark hold documaker

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list documaker sudo dnf downgrade documaker-<VERSION_BEFORE_12.6.0> sudo dnf versionlock add documaker

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-5258?

dojo: upgrade to 1.11.10, 1.12.8, 1.13.7, 1.14.6, 1.15.3, 1.16.2; debian linux: mitigate or apply the listed mitigation; communications application session controller: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-5258 being exploited?

CVE-2020-5258 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-5258 affect?

CVE-2020-5258 affects dojo, debian linux, communications application session controller. Severity is high (CVSS 7.7). In affected versions of dojo (NPM package), the deepCopy method is vulnerable to Prototype Pollution. Prototype Pollution refers to the ability to inject properties into existing JavaScript language construct prototypes, such as objects. An

How urgent is CVE-2020-5258?

Priority 60/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities · npm packages vulnerabilities

Related CVEs

CVE-2021-23450 HIGH 7.5 UPGRADE DOWNGRADE All versions of package dojo are vulnerable to Prototype Pollution via the setObject function.
CVE-2018-6561 MEDIUM 6.1 DOWNGRADE dijit.Editor in Dojo Toolkit 1.13 allows XSS via the onload attribute of an SVG element.
CVE-2018-15494 CRITICAL 9.8 UPGRADE MITIGATE In Dojo Toolkit before 1.14, there is unescaped string injection in dojox/Grid/DataGrid.
CVE-2018-1000665 MEDIUM 6.1 UPGRADE Dojo Dojo Objective Harness (DOH) version prior to version 1.14 contains a Cross Site Scripting (XSS) vulnerab

References

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