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TI-2021-02532 Aliases CVE-2021-3583GHSA-2pfh-q76x-gwvm

Improper input validation in ansible

Priority LOW 33CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 5 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-94.

Summary

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.

Why it matters now

EPSS 0.00897 59th percentileScored 2026-11-07
Fix Partial ansible (PyPI): 2.9.23rc1, 2.10.11rc1, 2.11.2rc1Red Hat: 2 advisoriesRed Hat: 5 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—ansibleansible_tower 3.7, ansible_engine 2.9.23—No fix listedCNA
—ansible (PyPI)before 2.9.23rc12.9.23rc1Patch availableGHSA-2pfh-q76x-gwvm
—ansible (PyPI)2.10.0a1 to before 2.10.11rc12.10.11rc1Patch availableGHSA-2pfh-q76x-gwvm
—ansible (PyPI)2.11.0a1 to before 2.11.2rc12.11.2rc1Patch availableGHSA-2pfh-q76x-gwvm
  • ansible Vendor— Affected ansible_tower 3.7, ansible_engine 2.9.23 Fixed in — No fix listed CNA
  • ansible (PyPI) Vendor— Affected before 2.9.23rc1 Fixed in 2.9.23rc1 Patch available GHSA-2pfh-q76x-gwvm
  • ansible (PyPI) Vendor— Affected 2.10.0a1 to before 2.10.11rc1 Fixed in 2.10.11rc1 Patch available GHSA-2pfh-q76x-gwvm
  • ansible (PyPI) Vendor— Affected 2.11.0a1 to before 2.11.2rc1 Fixed in 2.11.2rc1 Patch available GHSA-2pfh-q76x-gwvm

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:redhat:ansible_automation_platform:1.2:*:*:*:*:*:*:*1.2VulnerableRed Hat
cpe:2.3:a:redhat:ansible_engine:*:*:*:*:*:*:*:*before 2.9.23VulnerableRed Hat
cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:*before 3.7.0VulnerableRed Hat
  • cpe:2.3:a:redhat:ansible_automation_platform:1.2:*:*:*:*:*:*:* Versions 1.2 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:ansible_engine:*:*:*:*:*:*:*:* Versions before 2.9.23 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:* Versions before 3.7.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-2pfh-q76x-gwvm ansible (PyPI) Fixed in 2.9.23rc1 Advisory →
  • Fix · GHSA-2pfh-q76x-gwvm ansible (PyPI) Fixed in 2.10.11rc1 Advisory →
  • Fix · GHSA-2pfh-q76x-gwvm ansible (PyPI) Fixed in 2.11.2rc1 Advisory →

Red Hat 2 advisories

  • RHSA-2021:2664 Released 2021-07-07 · Red Hat rating Important
    Ansible security and bug fix update (2.9.23)
    • Red Hat Ansible Engine 2 for RHEL 7 ansible-2.9.23-1.el7ae, ansible-test-2.9.23-1.el7ae
    • Red Hat Ansible Engine 2 for RHEL 8 ansible-2.9.23-1.el8ae, ansible-test-2.9.23-1.el8ae
  • RHSA-2021:2663 Released 2021-07-07 · Red Hat rating Important
    Ansible security and bug fix update (2.9.23)
    • Red Hat Ansible Engine 2.9 for RHEL 7 Server ansible-2.9.23-1.el7ae, ansible-test-2.9.23-1.el7ae
    • Red Hat Ansible Engine 2.9 for RHEL 8 ansible-2.9.23-1.el8ae, ansible-test-2.9.23-1.el8ae

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ansible Tower 3AffectedNo fix yet
Red Hat Ansible Automation Platform 2.0 for RHEL 8Fixed—
Red Hat Ansible Engine 2 for RHEL 7Fixed RHSA-2021:2664
Red Hat Ansible Engine 2 for RHEL 8Fixed RHSA-2021:2664
Red Hat Ansible Engine 2.9 for RHEL 7 ServerFixed RHSA-2021:2663
Red Hat Ansible Engine 2.9 for RHEL 8Fixed RHSA-2021:2663
Not affected: 1 product
  • Red Hat Ansible Automation Platform 2.0 for RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3583
  2. 2026-10-03 Alias added: GHSA-2pfh-q76x-gwvm

References

Advisory 3

Other 7

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2026-35991 Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks KEVCVSS 3.1MEDIUM 6.5
  • TI-2026-34281 JavaScript Cookie: Per-instance prototype hijack in assign() enables cookie-attribute injection CVSS 3.1HIGH 7.5
  • TI-2026-28834 jq: Out-of-Bounds Read in jv_parse_sized() Error Formatting for Non-NUL-Terminated Counted Buffers CVSS 4.0MEDIUM 6.9
  • TI-2026-32429 Axios: Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge CVSS 3.1HIGH 7.7
  • TI-2023-27712 Python-cryptography: bleichenbacher timing oracle attack against rsa decryption - incomplete fix for cve-2020-25659 CVSS 3.1HIGH 7.5
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences