Skip to content
Noroxi
CVE-2021-3583· NVD / CVE Program· CNA redhat

A flaw was found in Ansible, where a user's controller is vulnerable to template injection.

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.89% (FIRST EPSS); higher than 59.2% of all records.
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: ansible (Debian:10) 2.7.7+dfsg-1+deb10u2; ansible (Debian:12) 5.4.0-1; ansible-core (Debian:12) 2.12.0-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to ansible (Debian:10) 2.7.7+dfsg-1+deb10u2; ansible (Debian:12) 5.4.0-1; ansible-core (Debian:12) 2.12.0-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in Ansible, where a user's controller is vulnerable to template injection. This issue can occur through facts used in the template if the user is trying to put templates in multi-line YAML strings and the facts being handled do not routinely include special template characters. This flaw allows attackers to perform command injection, which discloses sensitive information. The highest threat from this vulnerability is to confidentiality and integrity.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Sep 22, 2021
Updated
Jun 17, 2026
EPSS
0.8% · 59th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-3583

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for redhat records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatansible automation platform
redhatansible engine
redhatansible tower

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redhat ansible automation platform1.2
  • redhat ansible enginebefore 2.9.23
  • redhat ansible towerbefore 3.7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a ansible

    • ansible_tower 3.7, ansible_engine 2.9.23affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10ansiblebefore 2.7.7+dfsg-1+deb10u22.7.7+dfsg-1+deb10u2
Debian:12ansiblebefore 5.4.0-15.4.0-1
Debian:12ansible-corebefore 2.12.0-12.12.0-1
openSUSE:Leap 15.3ansiblebefore 2.9.27-150000.1.14.12.9.27-150000.1.14.1
openSUSE:Leap 15.3dracut-saltbootbefore 0.1.1657643023.0d694ce-150000.1.35.10.1.1657643023.0d694ce-150000.1.35.1
openSUSE:Leap 15.3golang-github-QubitProducts-exporter_exporterbefore 0.4.0-150000.1.15.10.4.0-150000.1.15.1
openSUSE:Leap 15.3python-hwdatabefore 2.3.5-150000.3.9.12.3.5-150000.3.9.1
openSUSE:Leap 15.3spacecmdbefore 4.3.14-150000.3.83.14.3.14-150000.3.83.1
openSUSE:Leap 15.4prometheus-blackbox_exporterbefore 0.19.0-150000.1.11.10.19.0-150000.1.11.1
openSUSE:Leap 15.4wirebefore 0.5.0-150000.1.6.10.5.0-150000.1.6.1
PyPIansiblefrom 2.10.0a1 · before 2.10.11rc12.10.11rc1
PyPIansiblefrom 2.11.0a1 · before 2.11.2rc12.11.2rc1
PyPIansiblebefore 2.9.23rc12.9.23rc1
PyPIansiblebefore 2.9.232.9.23
Red Hat:ansible_automation_platform:2.0::el8ansiblebefore 0:2.9.23-1.el8ap0:2.9.23-1.el8ap
Red Hat:ansible_engine:2.9::el7ansiblebefore 0:2.9.23-1.el7ae0:2.9.23-1.el7ae
Red Hat:ansible_engine:2.9::el7ansible-testbefore 0:2.9.23-1.el7ae0:2.9.23-1.el7ae
Red Hat:ansible_engine:2.9::el8ansiblebefore 0:2.9.23-1.el8ae0:2.9.23-1.el8ae
Red Hat:ansible_engine:2.9::el8ansible-testbefore 0:2.9.23-1.el8ae0:2.9.23-1.el8ae
SUSE:HPE Helion OpenStack 8ansiblebefore 2.9.27-3.21.12.9.27-3.21.1
SUSE:Linux Enterprise High Performance Computing 15-ESPOSgolang-github-prometheus-node_exporterbefore 1.3.0-150000.3.15.11.3.0-150000.3.15.1
SUSE:Manager Client Tools 15ansiblebefore 2.9.27-150000.1.14.12.9.27-150000.1.14.1
SUSE:Manager Client Tools 15dracut-saltbootbefore 0.1.1657643023.0d694ce-150000.1.35.10.1.1657643023.0d694ce-150000.1.35.1
SUSE:Manager Client Tools 15golang-github-QubitProducts-exporter_exporterbefore 0.4.0-150000.1.15.10.4.0-150000.1.15.1

+28

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-4237Platform: ec2_key module prints out the private key directly to the standard output
    31Monitor
  • CVE-2023-50782Python-cryptography: bleichenbacher timing oracle attack against rsa decryption - incomplete fix for cve-2020-25659
    30Monitor
  • CVE-2025-9909Aap-gateway: improper path validation in gateway allows credential exfiltration
    26Monitor

Published before and after this one in the same product

  • Later →CVE-2021-3681Apr 18, 2022 · A flaw was found in Ansible Galaxy Collections.
    22Monitor
  • Later →CVE-2022-2568Aug 18, 2022 · A privilege escalation flaw was found in the Ansible Automation Platform.
    26Monitor
  • Later →CVE-2022-1632Sep 1, 2022 · An Improper Certificate Validation attack was found in Openshift.
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:ansible5.4.0-1 · Debian:12Package registry (OSV)
debian:ansible-core2.12.0-1 · Debian:12Package registry (OSV)
opensuse:ansible2.9.27-150000.1.14.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:dracut-saltboot0.1.1657643023.0d694ce-150000.1.35.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:golang-github-QubitProducts-exporter_exporter0.4.0-150000.1.15.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:prometheus-blackbox_exporter0.19.0-150000.1.11.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:python-hwdata2.3.5-150000.3.9.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:spacecmd4.3.14-150000.3.83.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:wire0.5.0-150000.1.6.1 · openSUSE:Leap 15.4Package registry (OSV)
PyPI:ansible2.10.11rc1Package registry (OSV)
PyPI:ansible2.11.2rc1Package registry (OSV)
PyPI:ansible2.9.23Package registry (OSV)
PyPI:ansible2.9.23rc1Package registry (OSV)
red hat:ansible0:2.9.23-1.el8ap · Red Hat:ansible_automation_platform:2.0::el8Package registry (OSV)
red hat:ansible-test0:2.9.23-1.el7ae · Red Hat:ansible_engine:2.9::el7Package registry (OSV)
suse:ansible2.9.27-150000.1.14.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:ansible2.9.27-3.21.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:dracut-saltboot0.1.1657643023.0d694ce-150000.1.35.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:golang-github-QubitProducts-exporter_exporter0.4.0-150000.1.15.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:mgr-daemon4.3.5-150000.1.35.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:mgr-virtualization4.3.6-150000.1.32.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:prometheus-blackbox_exporter0.19.0-150000.1.11.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:python-hwdata2.3.5-150000.3.9.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:spacecmd4.3.14-150000.3.83.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:spacewalk-client-tools4.3.11-150000.3.65.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:uyuni-common-libs4.3.5-150000.1.24.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:uyuni-proxy-systemd-services4.3.6-150000.1.6.1 · SUSE:Manager Client Tools 15Package registry (OSV)
suse:zypp-plugin-spacewalk1.0.13-150000.3.32.1 · SUSE:Manager Client Tools 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records