CVE-2023-5764: A template injection flaw was found in Ansible where a user's controller internal templating operations may re

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HIGH 7.1WATCHLISTUPGRADEDOWNGRADEMITIGATE

CVE-2023-5764 is a high-severity flaw (CVSS 7.1) affecting ansible, extra packages for enterprise linux, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A template injection flaw was found in Ansible where a user's controller internal templating operations may remove the unsafe designation from template data. This issue could allow an attacker to use a specially crafted file to introduce templating injection when supplying templating data.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-1336
Published	2023-12-12
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: fedoraproject · redhat

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

Am I affected?

Timeline

2023-12-12 22:15 UTCPublished CVE record published
2026-06-17 06:49 UTCUpdated Record last modified

redhat ansible UPGRADE

Affected: < 2.14.12 · >= 2.15.0 and < 2.15.7 · 2.16.0 · 2.16.0 beta1 · 2.16.0 beta2 · 2.16.0 rc1

Fixed in: 2.14.12, 2.15.7

Safe to downgrade to: a release before 2.15.0

1. Check installed version

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

2. UPGRADE to 2.14.12 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ansible

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 2.15.0 (Debian / Ubuntu)

apt-cache madison ansible sudo apt install ansible=<VERSION_BEFORE_2.15.0> sudo apt-mark hold ansible

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

dnf --showduplicates list ansible sudo dnf downgrade ansible-<VERSION_BEFORE_2.15.0> sudo dnf versionlock add ansible

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.

fedoraproject extra packages for enterprise linux DOWNGRADE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

1. Check installed version

apt-cache policy extra-packages-for-enterprise-linux || rpm -q extra-packages-for-enterprise-linux || extra-packages-for-enterprise-linux --version

2. No fixed release: DOWNGRADE to a release before 8.0 (Debian / Ubuntu)

apt-cache madison extra-packages-for-enterprise-linux sudo apt install extra-packages-for-enterprise-linux=<VERSION_BEFORE_8.0> sudo apt-mark hold extra-packages-for-enterprise-linux

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

dnf --showduplicates list extra-packages-for-enterprise-linux sudo dnf downgrade extra-packages-for-enterprise-linux-<VERSION_BEFORE_8.0> sudo dnf versionlock add extra-packages-for-enterprise-linux

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.

fedoraproject fedora MITIGATE

Affected: 38 · 39

Fixed in: no fixed release known

Safe to downgrade to: a release before 38

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.

redhat ansible automation platform DOWNGRADE

Affected: 2.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4

1. Check installed version

apt-cache policy ansible-automation-platform || rpm -q ansible-automation-platform || ansible-automation-platform --version

2. No fixed release: DOWNGRADE to a release before 2.4 (Debian / Ubuntu)

apt-cache madison ansible-automation-platform sudo apt install ansible-automation-platform=<VERSION_BEFORE_2.4> sudo apt-mark hold ansible-automation-platform

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

dnf --showduplicates list ansible-automation-platform sudo dnf downgrade ansible-automation-platform-<VERSION_BEFORE_2.4> sudo dnf versionlock add ansible-automation-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.

redhat ansible developer DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy ansible-developer || rpm -q ansible-developer || ansible-developer --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison ansible-developer sudo apt install ansible-developer=<VERSION_BEFORE_1.1> sudo apt-mark hold ansible-developer

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

dnf --showduplicates list ansible-developer sudo dnf downgrade ansible-developer-<VERSION_BEFORE_1.1> sudo dnf versionlock add ansible-developer

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.

redhat ansible inside DOWNGRADE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

apt-cache policy ansible-inside || rpm -q ansible-inside || ansible-inside --version

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison ansible-inside sudo apt install ansible-inside=<VERSION_BEFORE_1.2> sudo apt-mark hold ansible-inside

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

dnf --showduplicates list ansible-inside sudo dnf downgrade ansible-inside-<VERSION_BEFORE_1.2> sudo dnf versionlock add ansible-inside

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-2023-5764?

ansible: upgrade to 2.14.12, 2.15.7; extra packages for enterprise linux: downgrade or apply the listed mitigation; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-5764 being exploited?

CVE-2023-5764 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-2023-5764 affect?

CVE-2023-5764 affects ansible, extra packages for enterprise linux, fedora. Severity is high (CVSS 7.1). A template injection flaw was found in Ansible where a user's controller internal templating operations may remove the unsafe designation from template data. This issue could allow an attacker to use a specially crafted file to introduce te

How urgent is CVE-2023-5764?

Priority 41/100. High severity; On your watchlist

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References

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