Ansible-core: unsafe tagging bypass via hostvars object in ansible-core
A flaw was found in Ansible-Core. This vulnerability allows attackers to bypass unsafe content protections using the hostvars object to reference and execute templated content. This issue can lead to arbitrary code execution if remote data or module outputs are improperly templated within playbooks.
- Published
- Nov 11, 2024
- Updated
- Jun 29, 2026
- EPSS
- 0.5% · 40th percentile
- CWE
- CWE-20
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · redhat
- 5.5
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
—
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.
github.com/ansible/ansible ansible-core
- up to and including 2.18.0affected · semver
Red Hat Ansible Automation Platform Execution Environments
- 1.2.0-93 and laternot affected · rpm
- 3.0.1-108 and laternot affected · rpm
- 2.9.27-34 and laternot affected · rpm
- 2.12.10-56 and laternot affected · rpm
- 2.15.13-4 and laternot affected · rpm
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8
- 1:2.16.14-1.el8ap and laternot affected · rpm
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 9
- 1:2.16.14-1.el9ap and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 10
- all versionsunknown
Red Hat Red Hat Enterprise Linux AI (RHEL AI)
- all versionsaffected
- all versionsaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:11 | ansible | before 2.10.7+merged+base+2.10.17+dfsg-0+deb11u4 | 2.10.7+merged+base+2.10.17+dfsg-0+deb11u4 |
| Debian:12 | ansible | before 5.4.0-1 | 5.4.0-1 |
| Debian:12 | ansible-core | before 2.14.18-0+deb12u1 | 2.14.18-0+deb12u1 |
| Debian:13 | ansible-core | before 2.18.0-2 | 2.18.0-2 |
| openSUSE:Tumbleweed | ansible-core | before 2.18.1-1.1 | 2.18.1-1.1 |
| openSUSE:Tumbleweed | ansible-core-2.16 | before 2.16.14-1.1 | 2.16.14-1.1 |
| openSUSE:Tumbleweed | ansible-core-2.17 | before 2.17.7-1.1 | 2.17.7-1.1 |
| openSUSE:Tumbleweed | ansible-core-2.18 | before 2.18.10-2.1 | 2.18.10-2.1 |
| openSUSE:Tumbleweed | ansible-core-2.19 | before 2.19.4-1.1 | 2.19.4-1.1 |
| openSUSE:Tumbleweed | ansible-core-2.20 | before 2.20.6-1.1 | 2.20.6-1.1 |
| PyPI | ansible-core | from 2.17.0b1 · before 2.17.7rc1 | 2.17.7rc1 |
| PyPI | ansible-core | from 2.18.0b1 · before 2.18.1rc1 | 2.18.1rc1 |
| PyPI | ansible-core | before 2.16.14rc1 | 2.16.14rc1 |
| Red Hat:ansible_automation_platform_developer:2.5::el8 | ansible-core | before 1:2.16.14-1.el8ap | 1:2.16.14-1.el8ap |
| Red Hat:ansible_automation_platform_developer:2.5::el9 | ansible-core | before 1:2.16.14-1.el9ap | 1:2.16.14-1.el9ap |
| Red Hat:ansible_automation_platform:2.5::el8 | automation-gateway-server | before 0:2.5.20241218-1.el8ap | 0:2.5.20241218-1.el8ap |
| Red Hat:ansible_automation_platform:2.5::el9 | automation-gateway-server | before 0:2.5.20241218-1.el9ap | 0:2.5.20241218-1.el9ap |
Same product
red hat: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-9902Ansible-core: ansible-core user may read/write unauthorized content25Monitor
- CVE-2024-8775Ansible-core: exposure of sensitive information in ansible vault files due to improper logging22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:ansible | 5.4.0-1 · Debian:12 | Package registry (OSV) |
| debian:ansible-core | 2.14.18-0+deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:ansible-core | 2.18.1-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ansible-core-2.16 | 2.16.14-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ansible-core-2.17 | 2.17.7-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ansible-core-2.18 | 2.18.10-2.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ansible-core-2.19 | 2.19.4-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ansible-core-2.20 | 2.20.6-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| PyPI:ansible-core | 2.16.14rc1 | Package registry (OSV) |
| PyPI:ansible-core | 2.17.7rc1 | Package registry (OSV) |
| PyPI:ansible-core | 2.18.1rc1 | Package registry (OSV) |
| red hat:ansible-core | 1:2.16.14-1.el8ap · Red Hat:ansible_automation_platform_developer:2.5::el8 | Package registry (OSV) |
| red hat:automation-gateway-server | 0:2.5.20241218-1.el8ap · Red Hat:ansible_automation_platform:2.5::el8 | Package 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.
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 researchersFinders, 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).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- A user must open a link or visit a page.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- low · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- Low
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- access.redhat.com/errata/RHSA-2024:10770
- access.redhat.com/errata/RHSA-2024:11145
- access.redhat.com/security/cve/CVE-2024-11079
- bugzilla.redhat.com/show_bug.cgi?id=2325171
- lists.debian.org/debian-lts-announce/2026/03/msg00006.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.