Vulnerability-Lookup

RHSA-2026:82339

Vulnerability from csaf_redhat - Published: 2026-10-13 20:53 - Updated: 2026-10-13 23:46

Summary

Red Hat Security Advisory: rhc-worker-playbook security update

Severity

Important

Notes

Topic: An update for rhc-worker-playbook is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Python-based worker for Red Hat connect, used to launch Ansible playbooks via Ansible Runner. Security Fix(es): * ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation via symlink-following chown (CVE-2026-11837) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-11837

A local privilege escalation vulnerability was found in the ansible.posix authorized_key module. The module's keyfile() function uses os.chown() instead of os.lchown() and opens files without O_NOFOLLOW when managing SSH authorized keys. An unprivileged local user can pre-stage symbolic links in their ~/.ssh directory to redirect file ownership changes to arbitrary system paths when an operator runs the authorized_key task as root, leading to local privilege escalation.

7.3 (High)


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

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Affected products

Fixed 5 products

Product	Version	Remediation
Unresolved product id: AppStream-8.8.0.Z.E4S:rhc-worker-playbook-0:0.1.8-5.el8_8.1.ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:rhc-worker-playbook-0:0.1.8-5.el8_8.1.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:rhc-worker-playbook-0:0.1.8-5.el8_8.1.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:rhc-worker-playbook-0:0.1.8-5.el8_8.1.src	—	Vendor Fix fix Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:rhc-worker-playbook-0:0.1.8-5.el8_8.1.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

References

8 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:82339	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2487424	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-11837	self
https://bugzilla.redhat.com/show_bug.cgi?id=2487424	external
https://www.cve.org/CVERecord?id=CVE-2026-11837	external
https://nvd.nist.gov/vuln/detail/CVE-2026-11837	external

Acknowledgments

Valentino Paulon

JSON

To clipboard

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      "cwe": {
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        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
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          "title": "Vulnerability description"
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          "title": "Vulnerability summary"
        },
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
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            "AppStream-8.8.0.Z.TUS:rhc-worker-playbook-0:0.1.8-5.el8_8.1.x86_64"
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
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      ],
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    }
  ]
}

CVE-2026-11837 (GCVE-0-2026-11837)

Vulnerability from cvelistv5 – Published: 2026-06-10 05:03 – Updated: 2026-10-13 20:58

Title

Ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation via symlink-following chown

Summary

Severity

7.3 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-10 13:57 UTC

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

redhat CNA under the redhat root

CNA scorecard B 81/100 over 996 records in the last 180 days details

References

6 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:79112	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:80508	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82339	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-11837	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2487424	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

10 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:0.2.3-6.el10_0.2 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:0.1.8-2.el8_6.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:0.1.8-2.el8_6.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:0.1.8-5.el8_8.1 , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:0.1.8-5.el8_8.1 , < * (rpm) cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenStack Platform 17.1	cpe:/a:redhat:openstack:17.1
Red Hat	Red Hat OpenStack Platform 18.0	cpe:/a:redhat:openstack:18.0

Date Public

2026-06-10 00:00

Credits

Red Hat would like to thank Valentino Paulon for reporting this issue.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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