CVE Explorer
CVE-2026-4893
An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"dnsmasq","vendor":"dnsmasq","versions":[{"lessThan":"2.92rel2","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"description":"CWE-287: Improper Authentication","lang":"en"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/problemTypes/0/descriptions/0
Source references
6 source assertions{"url":"https://github.com/NixOS/nixpkgs/pull/519082"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/references/4
{"url":"https://github.com/NixOS/nixpkgs/pull/519093"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/references/3
{"url":"https://github.com/pi-hole/FTL/releases/tag/v6.6.2"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/references/5
{"url":"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/references/1
{"url":"https://thekelleys.org.uk/dnsmasq/CVE/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/references/2
{"url":"https://www.kb.cert.org/vuls/id/471747"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3af6d980c413cb76c0294527b822ace01dcc93cc56c3defeebea090b5e4570bf · sha256:a25c24ca18344b8a… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.