CVE-2026-2291

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Source
https://cve.org/CVERecord?id=CVE-2026-2291
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-2291.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-2291
Downstream
ALPINE (1)
AZL (1)
BELL (1)
CGA (4)
CLEANSTART (2)
CLSA (3)
DEBIAN (1)
MGASA (1)
OESA (5)
openSUSE (3)
RHSA (4)
RLSA (3)
SUSE (13)
UBUNTU (1)
Related
ALSA (3)
openSUSE (3)
SUSE (13)
Published
2026-05-11T16:47:01Z
Modified
2026-10-22T10:34:30Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
CVE-2026-2291
Details

dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.

Database specific 
{
    "cna_assigner": "certcc",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2291.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "fixed": "2.92rel2"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/pi-hole/ftl

Affected ranges

Type
GIT
Repo
https://github.com/pi-hole/ftl
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
82c58cc45435ddd77875daf368cf64398bc15966
Database specific
Show details 
{
    "extracted_events": [
        {
            "original_tag": "v6.6.2",
            "range": [
                {
                    "fixed": "82c58cc45435ddd77875daf368cf64398bc15966"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v1.*
v1.0
v1.1
v1.10
v1.10.1
v1.10.2
v1.10.3
v1.11
v1.11.1
v1.2
v1.2.1
v1.3
v1.3.1
v1.4
v1.5
v1.5.1
v1.6
v1.7
v1.8
v1.9
v2.*
v2.0
v2.1
v2.10
v2.11
v2.11.1
v2.12
v2.13
v2.13.1
v2.13.2
v2.2
v2.3
v2.3.1
v2.4
v2.4.1
v2.5
v2.6
v2.6.1
v2.6.2
v2.7
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.8
v2.9
v2.9.1
v2.9.2
v2.9.3
v2.9.4
v3.*
v3.0
v4.*
v4.0
v4.1
v4.1.1
v4.1.2
v4.2
v4.2.1
v4.2.2
v4.2.3
v4.3
v4.3.1
v5.*
v5.0
v5.1
v5.10
v5.10.1
v5.10.2
v5.11
v5.12
v5.12.1
v5.13
v5.14
v5.15
v5.16
v5.16.1
v5.16.2
v5.16.3
v5.17
v5.18
v5.18.1
v5.18.2
v5.19
v5.19.1
v5.19.2
v5.2
v5.20
v5.20.1
v5.21
v5.22
v5.23
v5.24
v5.25
v5.25.1
v5.25.2
v5.3
v5.3.1
v5.3.2
v5.3.3
v5.3.4
v5.4
v5.5
v5.5.1
v5.6
v5.7
v5.8
v5.8.1
v5.9
v6.*
v6.0
v6.0.1
v6.0.2
v6.0.3
v6.0.4
v6.1
v6.2
v6.2.1
v6.2.2
v6.2.3
v6.3
v6.3.1
v6.3.2
v6.3.3
v6.4.1
v6.5
v6.6
v6.6.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-2291.json"