CVE-2026-2291

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Source
https://cve.org/CVERecord?id=CVE-2026-2291
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2291.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-2291
Downstream
Related
Published
2026-05-11T16:47:01.981Z
Modified
2026-07-08T08:12:40.284896013Z
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 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "2.92rel2"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2291.json",
    "cna_assigner": "certcc"
}
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 
{
    "source": "REFERENCES"
}

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/cve-osv-conversion/osv-output/CVE-2026-2291.json"