PatchTheCVECVE-2019-20330: FasterXML jackson-databind 2.x before 2.9.10.2 lacks certain net.sf.ehcache blocking.
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CRITICAL 9.8REMOTEUPGRADEUPGRADEDOWNGRADE
CVE-2019-20330 is a critical-severity flaw (CVSS 9.8) affecting jackson-databind, banking platform, communications billing and revenue management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
FasterXML jackson-databind 2.x before 2.9.10.2 lacks certain net.sf.ehcache blocking.
Why this priority
- Critical severity
- EPSS top 5%: very likely to be exploited
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 8.6% (top 5%) |
| CISA exploited list | No |
| Weakness | CWE-502 |
| Published | 2020-01-03 |
| 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
fasterxml jackson-databind UPGRADE
Affected: >= 2.0.0 and < 2.7.9.7 · >= 2.8.0 and < 2.8.11.5 · >= 2.9.0 and < 2.9.10.2
Fixed in: 2.7.9.7, 2.8.11.5, 2.9.10.2
Safe to downgrade to: a release before 2.0.0
1. Check installed version
apt-cache policy jackson-databind || rpm -q jackson-databind || jackson-databind --version
2. UPGRADE to 2.7.9.7 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade jackson-databind
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade jackson-databind
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 2.0.0 (Debian / Ubuntu)
apt-cache madison jackson-databind
sudo apt install jackson-databind=<VERSION_BEFORE_2.0.0>
sudo apt-mark hold jackson-databind
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list jackson-databind
sudo dnf downgrade jackson-databind-<VERSION_BEFORE_2.0.0>
sudo dnf versionlock add jackson-databind
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 banking platform UPGRADE
Affected: >= 2.4.0 and <= 2.9.0
Fixed in: newer than 2.9.0
Safe to downgrade to: a release before 2.4.0
1. Check installed version
apt-cache policy banking-platform || rpm -q banking-platform || banking-platform --version
2. UPGRADE to newer than 2.9.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade banking-platform
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade banking-platform
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 2.4.0 (Debian / Ubuntu)
apt-cache madison banking-platform
sudo apt install banking-platform=<VERSION_BEFORE_2.4.0>
sudo apt-mark hold banking-platform
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list banking-platform
sudo dnf downgrade banking-platform-<VERSION_BEFORE_2.4.0>
sudo dnf versionlock add banking-platform
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 billing and revenue management DOWNGRADE
Affected: 7.5.0.23.0 · 12.0.0.3.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.5.0.23.0
1. Check installed version
apt-cache policy communications-billing-and-revenue-management || rpm -q communications-billing-and-revenue-management || communications-billing-and-revenue-management --version
2. No fixed release: DOWNGRADE to a release before 7.5.0.23.0 (Debian / Ubuntu)
apt-cache madison communications-billing-and-revenue-management
sudo apt install communications-billing-and-revenue-management=<VERSION_BEFORE_7.5.0.23.0>
sudo apt-mark hold communications-billing-and-revenue-management
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list communications-billing-and-revenue-management
sudo dnf downgrade communications-billing-and-revenue-management-<VERSION_BEFORE_7.5.0.23.0>
sudo dnf versionlock add communications-billing-and-revenue-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 cloud native core network slice selection function DOWNGRADE
Affected: 1.2.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.2.1
1. Check installed version
apt-cache policy communications-cloud-native-core-network-slice-selection-function || rpm -q communications-cloud-native-core-network-slice-selection-function || communications-cloud-native-core-network-slice-selection-function --version
2. No fixed release: DOWNGRADE to a release before 1.2.1 (Debian / Ubuntu)
apt-cache madison communications-cloud-native-core-network-slice-selection-function
sudo apt install communications-cloud-native-core-network-slice-selection-function=<VERSION_BEFORE_1.2.1>
sudo apt-mark hold communications-cloud-native-core-network-slice-selection-function
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list communications-cloud-native-core-network-slice-selection-function
sudo dnf downgrade communications-cloud-native-core-network-slice-selection-function-<VERSION_BEFORE_1.2.1>
sudo dnf versionlock add communications-cloud-native-core-network-slice-selection-function
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 contacts server DOWNGRADE
Affected: 8.0.0.4.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 8.0.0.4.0
1. Check installed version
apt-cache policy communications-contacts-server || rpm -q communications-contacts-server || communications-contacts-server --version
2. No fixed release: DOWNGRADE to a release before 8.0.0.4.0 (Debian / Ubuntu)
apt-cache madison communications-contacts-server
sudo apt install communications-contacts-server=<VERSION_BEFORE_8.0.0.4.0>
sudo apt-mark hold communications-contacts-server
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list communications-contacts-server
sudo dnf downgrade communications-contacts-server-<VERSION_BEFORE_8.0.0.4.0>
sudo dnf versionlock add communications-contacts-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.
oracle communications evolved communications application server DOWNGRADE
Affected: 7.1
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.1
1. Check installed version
apt-cache policy communications-evolved-communications-application-server || rpm -q communications-evolved-communications-application-server || communications-evolved-communications-application-server --version
2. No fixed release: DOWNGRADE to a release before 7.1 (Debian / Ubuntu)
apt-cache madison communications-evolved-communications-application-server
sudo apt install communications-evolved-communications-application-server=<VERSION_BEFORE_7.1>
sudo apt-mark hold communications-evolved-communications-application-server
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list communications-evolved-communications-application-server
sudo dnf downgrade communications-evolved-communications-application-server-<VERSION_BEFORE_7.1>
sudo dnf versionlock add communications-evolved-communications-application-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.
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-2019-20330?
jackson-databind: upgrade to 2.7.9.7, 2.8.11.5, 2.9.10.2; banking platform: upgrade to newer than 2.9.0; communications billing and revenue management: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2019-20330 being exploited?
CVE-2019-20330 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-2019-20330 affect?
CVE-2019-20330 affects jackson-databind, banking platform, communications billing and revenue management. Severity is critical (CVSS 9.8). FasterXML jackson-databind 2.x before 2.9.10.2 lacks certain net.sf.ehcache blocking.
How urgent is CVE-2019-20330?
Priority 63/100. Critical severity; EPSS top 5%: very likely to be exploited; Remotely exploitable, no login, no user action
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