CVE-2026-25518: cert-manager-controller DoS via Specially Crafted DNS Response

cert-manager-controller DoS via Specially Crafted DNS Response

F-CERTMGR-DNS-001

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

Recorded evidence

5.9medium

CVE-2026-25518CVEcert-manager/cert-manager

cert-manager-controller DoS via Specially Crafted DNS Response

Fixed in: cert-manager v1.18.5, v1.19.3

patched

details

Finding IDs: F-CERTMGR-DNS-001
CVE: CVE-2026-25518
GHSA: GHSA-gx3x-vq4p-mhhv
Status: patched
Fixed in: cert-manager v1.18.5, v1.19.3
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE registry state: PUBLISHED
CVE state checked: 23 Sep 2026
Upstream title: cert-manager-controller DoS via Specially Crafted DNS Response
Upstream CWE: CWE-129, CWE-704
Upstream publication: 2 Feb 2026
Upstream updated: 3 Feb 2026
Metadata fetched: 23 Sep 2026
Upstream @1seal credit: @1seal: reporter (accepted)

F-CERTMGR-DNS-001: Input / state handling. Malformed DNS response fields reach a panic. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-CERTMGR-DNS-001

Security area (1seal assessment): Availability. Malformed DNS response fields reach a panic. Reviewed 24 Sep 2026.

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How this page groups evidence

This identifier groups recorded evidence; it is not an additional CVE, independent-vulnerability count or guarantee of vendor confirmation. Fixed code, released versions, attribution and independent discovery are distinct claims. Absent metadata means not recorded, not disproved. Counting rules.