Vulnerability-Lookup

CVE-2026-93010 (GCVE-0-2026-93010)

Vulnerability from cvelistv5 – Published: 2026-10-29 13:13 – Updated: 2026-10-29 13:13

Title

Dnsmasq: dnsmasq: --leasequery without address argument applies no source address check

Summary

A flaw was found in dnsmasq. When DHCP leasequery is enabled without listing allowed source addresses, the server does not check who sent the query. A host on the local network can request DHCP lease records and learn assigned addresses, MAC addresses, hostnames, and related lease metadata. The feature is off unless an administrator turns it on.

Severity

4.3 (Medium)


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

CWE

CWE-862 - Missing Authorization

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1063 records in the last 180 days details

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-93010	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2536081	issue-trackingx_refsource_REDHAT

Impacted products

9 products

Vendor	Product	Version
Red Hat	Red Hat Ceph Storage 9	cpe:/a:redhat:ceph_storage:9
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
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 OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat OpenStack Platform 13 (Queens)	cpe:/a:redhat:openstack:13
Red Hat	Red Hat OpenStack Platform 18.0	cpe:/a:redhat:openstack:18.0

Date Public

2026-10-28 09:30

Credits

Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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          "value": "The following measures reduce risk:\n\n1. Prefer --leasequery=\u003caddr\u003e[/prefix] so only designated relays may query.\n2. If leasequery is not needed, do not enable it. It is off by default.\n3. If unrestricted leasequery is required, use firewall rules to limit which hosts can send DHCP packets to dnsmasq."
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GHSA-2R7H-M3QH-F4CJ

Vulnerability from github – Published: 2026-10-29 15:30 – Updated: 2026-10-29 15:30

Details

Severity

4.3 (Medium)


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

Show details on source website

JSON

To clipboard

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  ],
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    "severity": "MODERATE"
  },
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  "id": "GHSA-2r7h-m3qh-f4cj",
  "modified": "2026-10-29T15:30:54Z",
  "published": "2026-10-29T15:30:54Z",
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      "type": "CVSS_V3"
    }
  ]
}

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.

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