Vulnerability-Lookup

RHSA-2026:95653

Vulnerability from csaf_redhat - Published: 2026-11-05 19:44 - Updated: 2026-11-06 07:28

Summary

Red Hat Security Advisory: Satellite 6 Client Update

Severity

Critical

Notes

Topic: A security update for Red Hat Satellite Client is now available. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.

Details: This advisory provides security fixes for affected packages used by Red Hat Satellite Client. The updates address the vulnerability described below. Security Fix(es): * openvox-agent: Authenticated remote code execution via report event deserialization (CVE-2026-115731).

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-2026-115731

Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, allows a client that holds a CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via a PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.

9.9 (Critical)


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

CWE-502 - Deserialization of Untrusted Data

Affected products

Fixed 11 products

Product	Version	Remediation
Unresolved product id: 10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: 10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.aarch64	—	Vendor Fix fix Workaround
Unresolved product id: 9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.src	—	Vendor Fix fix Workaround
Unresolved product id: 9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Critical

References

11 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:95653	self
https://access.redhat.com/security/updates/classi…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-115731	self
https://bugzilla.redhat.com/show_bug.cgi?id=2566451	external
https://www.cve.org/CVERecord?id=CVE-2026-115731	external
https://nvd.nist.gov/vuln/detail/CVE-2026-115731	external
https://github.com/OpenVoxProject/openvox/securit…	external
https://portal.perforce.com/s/cve/a91Qi000003IaHp…	external
https://voxpupuli.org/blog/2026/11/03/critical-cv…	external
https://www.openwall.com/lists/oss-security/2026/…	external

Acknowledgments

Neodyme Alain

JSON

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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Alain"
          ],
          "organization": "Neodyme",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2026-115731",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "discovery_date": "2026-11-03T21:15:54.948758+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2566451"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, allows a client that holds a CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via a PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "puppetserver: openvox-agent: openvox-server: puppetserver: authenticated remote code execution via report event deserialization",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-115731"
        },
        {
          "category": "external",
          "summary": "RHBZ#2566451",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2566451"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-115731",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-115731"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-115731",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115731"
        },
        {
          "category": "external",
          "summary": "https://github.com/OpenVoxProject/openvox/security/advisories/GHSA-ffr6-rwpm-p5wq",
          "url": "https://github.com/OpenVoxProject/openvox/security/advisories/GHSA-ffr6-rwpm-p5wq"
        },
        {
          "category": "external",
          "summary": "https://portal.perforce.com/s/cve/a91Qi000003IaHpIAK/report-deserialization-code-execution",
          "url": "https://portal.perforce.com/s/cve/a91Qi000003IaHpIAK/report-deserialization-code-execution"
        },
        {
          "category": "external",
          "summary": "https://voxpupuli.org/blog/2026/11/03/critical-cve-updates/",
          "url": "https://voxpupuli.org/blog/2026/11/03/critical-cve-updates/"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2026/11/03/14",
          "url": "https://www.openwall.com/lists/oss-security/2026/11/03/14"
        }
      ],
      "release_date": "2026-11-03T20:40:10.100000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-11-05T19:44:10+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.aarch64",
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.src",
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.x86_64",
            "7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.src",
            "7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.x86_64",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.aarch64",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.src",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.x86_64",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.aarch64",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.src",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:95653"
        },
        {
          "category": "workaround",
          "details": "Until patched, avoid autosigning certificate requests without strong verification so untrusted clients cannot obtain a CA-signed agent certificate.\n\n--- CME Mitigation Guidance (2026-11-04) ---\nDisclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.\n\nThe highest-value action is to enforce safe deserialization allowlists for report event types in FromDataConverter to prevent dynamic class_eval execution: upgrade to openvox-server 9.2.0 and 8.18.0, Puppet Core agent 9.1.3 and 8.22.2 (or the fixed Openvox Server/Puppetserver builds), which restricts deserialization of report events to safe expected types to block untrusted __ptype instantiation and dynamic evaluation, closing crafted JSON report containing malicious serialized rich-data event types submitted via HTTP PUT. Until patched, this is a concern on Puppet Server and OpenVox Server instances processing agent reports, so avoid autosigning certificate requests without strong verification and restrict network access to the PUT /puppet/v3/report endpoint. As a compensating measure, enforce strict allowlist validation over report payload schemas and event structures before deserialization, deploy EDR to detect anomalous child processes and post-exploitation activity spawned by the puppetserver service user, configure auditd to log unauthorized system calls and command executions initiated by the puppetserver daemon, and use Falco or eBPF runtime security to detect unexpected shell invocations or sensitive credential reads by puppetserver. These controls limit blast radius and contain exploitation, but they do not fix the underlying untrusted deserialization defect \u2014 apply the upstream patch to fully remediate.\n\nHighest-impact CME: CME-1302 Deserialization Allowlist (Safe Loading) (high)",
          "product_ids": [
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.aarch64",
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.src",
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.x86_64",
            "7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.src",
            "7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.x86_64",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.aarch64",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.src",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.x86_64",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.aarch64",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.src",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.aarch64",
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.src",
            "10Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el10sat.x86_64",
            "7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.src",
            "7Server-satellite-client-openvox:openvox-agent-0:8.32.0-1.el7sat.x86_64",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.aarch64",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.src",
            "8Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el8sat.x86_64",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.aarch64",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.src",
            "9Base-openvox-agent-6:openvox-agent-0:8.32.0-1.el9sat.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Critical"
        }
      ],
      "title": "puppetserver: openvox-agent: openvox-server: puppetserver: authenticated remote code execution via report event deserialization"
    }
  ]
}

CVE-2026-115731 (GCVE-0-2026-115731)

Vulnerability from cvelistv5 – Published: 2026-11-03 20:40 – Updated: 2026-11-06 19:36

Title

Report Deserialization Code Execution

Summary

Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.

Severity

9.4 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-06 19:36 UTC

CWE

CWE-502 - Deserialization of Untrusted Data
CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

Perforce CNA under the mitre root

CNA scorecard C 73/100 over 18 records in the last 180 days details

References

1 reference

URL	Tags
https://portal.perforce.com/s/cve/a91Qi000003IaHp…

Impacted products

1 product

Vendor	Product	Version
Perforce	Puppet Enterprise	Affected: 2023.8.0 , < 2023.8.13 (custom) Affected: 2025.0.0 , < 2025.12.1 (custom) Affected: 2026.0.0 , < 2026.0.1 (custom) Unaffected: 2023.8.13 Unaffected: 2025.12.1 Unaffected: 2026.0.1

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

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

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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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