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CVE-2026-34933

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version 0.9-rc4.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:67d357b3789df3449c67b78e44c895a862e8545b3ea989844dbf895a97b85b55
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"avahi","vendor":"avahi","versions":[{"status":"affected","version":"< 0.9-rc4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-617","description":"CWE-617: Reachable Assertion","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/04/11/9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/adp/1/references/0
{"name":"https://github.com/avahi/avahi/commit/625ca0fac19229f6dfa3a6c6b698ae657187e50c","tags":["x_refsource_MISC"],"url":"https://github.com/avahi/avahi/commit/625ca0fac19229f6dfa3a6c6b698ae657187e50c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/cna/references/2
{"name":"https://github.com/avahi/avahi/pull/891","tags":["x_refsource_MISC"],"url":"https://github.com/avahi/avahi/pull/891"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/cna/references/1
{"name":"https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/avahi/avahi/security/advisories/GHSA-w65r-6gxh-vhvc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:099e71a160a86883a97128c26e0fcd42d102e5ce6f9430dca464ad35c21dc5e2 · sha256:d0bc9e274d70dd79… · /containers/adp/0/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.

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