PatchTheCVECVE-2021-23450: All versions of package dojo are vulnerable to Prototype Pollution via the setObject function.
66
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HIGH 7.5REMOTEWATCHLISTUPGRADEDOWNGRADEUPGRADE
CVE-2021-23450 is a high-severity flaw (CVSS 7.5) affecting dojo, communications policy management, primavera unifier. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
All versions of package dojo are vulnerable to Prototype Pollution via the setObject function.
Why this priority
- High severity
- EPSS top 2%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 30.4% (top 2%) |
| CISA exploited list | No |
| Weakness | CWE-1321 |
| Published | 2021-12-17 |
| Last modified | 2026-10-08 |
Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
linuxfoundation dojo UPGRADE
Affected: < 1.17.0
Fixed in: 1.17.0
Safe to downgrade to: no unaffected older release
1. Check installed version
npm ls dojo
2. UPGRADE to 1.17.0
npm install dojo@">=1.17.0"
oracle communications policy management DOWNGRADE
Affected: 12.6.0.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.6.0.0.0
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 12.6.0.0.0 (Debian / Ubuntu)
apt-cache madison communications-policy-management
sudo apt install communications-policy-management=<VERSION_BEFORE_12.6.0.0.0>
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_12.6.0.0.0>
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 primavera unifier UPGRADE
Affected: >= 17.7 and <= 17.12 · 18.8 · 19.12 · 20.12 · 21.12
Fixed in: newer than 17.12
Safe to downgrade to: a release before 17.7
1. Check installed version
apt-cache policy primavera-unifier || rpm -q primavera-unifier || primavera-unifier --version
2. UPGRADE to newer than 17.12 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade primavera-unifier
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade primavera-unifier
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 17.7 (Debian / Ubuntu)
apt-cache madison primavera-unifier
sudo apt install primavera-unifier=<VERSION_BEFORE_17.7>
sudo apt-mark hold primavera-unifier
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list primavera-unifier
sudo dnf downgrade primavera-unifier-<VERSION_BEFORE_17.7>
sudo dnf versionlock add primavera-unifier
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 weblogic server DOWNGRADE
Affected: 12.2.1.4.0 · 14.1.1.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.2.1.4.0
1. Check installed version
apt-cache policy weblogic-server || rpm -q weblogic-server || weblogic-server --version
2. No fixed release: DOWNGRADE to a release before 12.2.1.4.0 (Debian / Ubuntu)
apt-cache madison weblogic-server
sudo apt install weblogic-server=<VERSION_BEFORE_12.2.1.4.0>
sudo apt-mark hold weblogic-server
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list weblogic-server
sudo dnf downgrade weblogic-server-<VERSION_BEFORE_12.2.1.4.0>
sudo dnf versionlock add weblogic-server
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: 10.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 10.0
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.
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.
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-2021-23450?
dojo: upgrade to 1.17.0; communications policy management: downgrade or apply the listed mitigation; primavera unifier: upgrade to newer than 17.12. Exact commands for each OS are on this page.
Is CVE-2021-23450 being exploited?
CVE-2021-23450 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-2021-23450 affect?
CVE-2021-23450 affects dojo, communications policy management, primavera unifier. Severity is high (CVSS 7.5). All versions of package dojo are vulnerable to Prototype Pollution via the setObject function.
How urgent is CVE-2021-23450?
Priority 66/100. High severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist
Software pages
Debian vulnerabilities · Oracle WebLogic vulnerabilities
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