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CVE-2020-7226: CiphertextHeader.java in Cryptacular 1.2.3, as used in Apereo CAS and other products, allows attackers to trig

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This week
HIGH 7.5REMOTEUPGRADEDOWNGRADEDOWNGRADE

CVE-2020-7226 is a high-severity flaw (CVSS 7.5) affecting cryptacular, communications services gatekeeper, webcenter sites. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CiphertextHeader.java in Cryptacular 1.2.3, as used in Apereo CAS and other products, allows attackers to trigger excessive memory allocation during a decode operation, because the nonce array length associated with "new byte" may depend on untrusted input within the header of encoded data.

Why this priority

  • High severity
  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance3.3% (top 11%)
CISA exploited listNo
WeaknessCWE-770
Published2020-01-24
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: oracle · vt

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

vt cryptacular UPGRADE
Affected: < 1.1.4 · >= 1.2.0 and < 1.2.4
Fixed in: 1.1.4, 1.2.4
Safe to downgrade to: a release before 1.2.0
1. Check installed version
apt-cache policy cryptacular || rpm -q cryptacular || cryptacular --version
2. UPGRADE to 1.1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade cryptacular
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade cryptacular
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 1.2.0 (Debian / Ubuntu)
apt-cache madison cryptacular sudo apt install cryptacular=<VERSION_BEFORE_1.2.0> sudo apt-mark hold cryptacular
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list cryptacular sudo dnf downgrade cryptacular-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add cryptacular
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 services gatekeeper DOWNGRADE
Affected: 7.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 7.0
1. Check installed version
apt-cache policy communications-services-gatekeeper || rpm -q communications-services-gatekeeper || communications-services-gatekeeper --version
2. No fixed release: DOWNGRADE to a release before 7.0 (Debian / Ubuntu)
apt-cache madison communications-services-gatekeeper sudo apt install communications-services-gatekeeper=<VERSION_BEFORE_7.0> sudo apt-mark hold communications-services-gatekeeper
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list communications-services-gatekeeper sudo dnf downgrade communications-services-gatekeeper-<VERSION_BEFORE_7.0> sudo dnf versionlock add communications-services-gatekeeper
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 webcenter sites DOWNGRADE
Affected: 12.2.1.3.0 · 12.2.1.4.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.2.1.3.0
1. Check installed version
apt-cache policy webcenter-sites || rpm -q webcenter-sites || webcenter-sites --version
2. No fixed release: DOWNGRADE to a release before 12.2.1.3.0 (Debian / Ubuntu)
apt-cache madison webcenter-sites sudo apt install webcenter-sites=<VERSION_BEFORE_12.2.1.3.0> sudo apt-mark hold webcenter-sites
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list webcenter-sites sudo dnf downgrade webcenter-sites-<VERSION_BEFORE_12.2.1.3.0> sudo dnf versionlock add webcenter-sites
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.
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-2020-7226?

cryptacular: upgrade to 1.1.4, 1.2.4; communications services gatekeeper: downgrade or apply the listed mitigation; webcenter sites: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-7226 being exploited?

CVE-2020-7226 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-2020-7226 affect?

CVE-2020-7226 affects cryptacular, communications services gatekeeper, webcenter sites. Severity is high (CVSS 7.5). CiphertextHeader.java in Cryptacular 1.2.3, as used in Apereo CAS and other products, allows attackers to trigger excessive memory allocation during a decode operation, because the nonce array length associated with "new byte" may depend on

How urgent is CVE-2020-7226?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities · Oracle WebLogic vulnerabilities

References

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