{"metadata": {"vulnerability": "CVE-2026-110985", "count": 21, "kinds": {"milestone": 7, "sighting": 3, "kev": 0, "other": 11}}, "data": [{"timestamp": "2026-10-15T11:31:31.708Z", "date_only": false, "value": "2026-10-15T11:31:31.708Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-110985", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-28T00:00:00Z", "date_only": true, "value": "2026-10-28", "kind": "milestone", "label": "Published", "source": "certfr_avis \u00b7 CERTFR-2026-AVI-1415", "record": "CERTFR-2026-AVI-1415", "field": "vendor_advisories.0.published_at", "linked_record": true}, {"timestamp": "2026-10-28T16:37:45.688Z", "date_only": false, "value": "2026-10-28T16:37:45.688Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-110985", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-28T16:37:45.688Z", "date_only": false, "value": "2026-10-28T16:37:45.688Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / apache", "record": "CVE-2026-110985", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2026-10-28T16:53:02.441Z", "date_only": false, "value": "2026-10-28T16:53:02.441697Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117519573445667582", "record": "CVE-2026-110985", "field": "creation_timestamp", "uuid": "5c3f9a8a-3126-4ed2-9169-8776db0c02b4", "content": "CVE-2026-110985 Apache Kafka: Broker silently skips JWT signature verification for SASL/OAUTHBEARER when the JWKS endpoint URL is not configured A Kafka broker using SASL/OAUTHBEARER with the default validator (sasl.oauthbearer.jwt.validator.class=DefaultJwtValidator) selects its implementation from configuration. When sasl.oauthbearer.jwks.endpoint.url is set, the validator verifies the JWT signature. When that URL is unset (the default) and no verification key resolver is supplied, DefaultJwtValidator silently falls back to ClientJwtValidator, which does not verify the JWT signature, algorithm, or issuer - and the broker starts with no warning or error. This is the residual of CVE-2026-33557, whose fix restored signature verification only on the path where the JWKS endpoint URL is set.\nImpact:\nA broker in this state accepts any structurally valid JWT, including \"alg\":\"none\" tokens. An unauthenticated remote attacker who can reach the listener can forge a token asserting any principal - including configured superusers - and gain full access to the cluster. Only brokers that enable SASL/OAUTHBEARER validation without a JWKS endpoint URL (and without a custom verification key resolver) are affected; brokers that set the URL verify signatures and are not affected. Unlike CVE-2026-110952 (issuer/audience not enforced by default), here no signature is verified at all.\nMitigation (all affected versions, no upgrade required):\nSet sasl.oauthbearer.jwks.endpoint.url for every listener/mechanism that uses OAuthBearerValidatorCallbackHandler, or configure a signature-verifying sasl.oauthbearer.jwt.validator.class.\nResolution:\nFrom Apache Kafka 4.2.2, 4.3.1, and 4.4.0: a broker that would fall back to the non-verifying ClientJwtValidator fails to start with a ConfigException instead of running without signature verification (secure by default).\nhttps://www.cve.org/CVERecord?id=CVE-2026-110985https://kafka.apache.org/cve-list#apache #ApacheSoftwareFoundation #ApacheKafka#CVE_2026_110985#bot", "url": "https://infosec.exchange/users/cve/statuses/117519573445667582"}, {"timestamp": "2026-10-28T17:17:00Z", "date_only": false, "value": "2026-10-28T17:17:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-110985", "record": "UBUNTU-CVE-2026-110985", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T17:17:38Z", "date_only": false, "value": "2026-10-28T17:17:38Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-J27V-M9WW-P89M", "record": "GHSA-J27V-M9WW-P89M", "field": "database_specific.nvd_published_at", "linked_record": true}, {"timestamp": "2026-10-28T17:17:38.157Z", "date_only": false, "value": "2026-10-28T17:17:38.157", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-110985", "record": "FKIE_CVE-2026-110985", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T18:16:06.925Z", "date_only": false, "value": "2026-10-28T18:16:06.925403Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/infosec.skyfleet.blue/post/cyxkyfwfujhil", "record": "CVE-2026-110985", "field": "creation_timestamp", "uuid": "16f3c90e-f5dd-46c1-93aa-ceaaecb2d8d4", "content": "CVE-2026-110985: Apache Kafka: Broker silently skips JWT signature verification for SASL/OAUTHBEARER when the JWKS endpoint URL is not configured", "url": "https://bsky.app/profile/infosec.skyfleet.blue/post/cyxkyfwfujhil"}, {"timestamp": "2026-10-28T18:32:03Z", "date_only": false, "value": "2026-10-28T18:32:03Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-J27V-M9WW-P89M", "record": "GHSA-J27V-M9WW-P89M", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-29T00:00:00Z", "date_only": false, "value": "2026-10-29T00:00:00", "kind": "other", "label": "Last revision date", "source": "certfr_avis \u00b7 CERTFR-2026-AVI-1415", "record": "CERTFR-2026-AVI-1415", "field": "last_revision_date", "linked_record": true}, {"timestamp": "2026-10-29T00:00:00Z", "date_only": false, "value": "2026-10-29T00:00:00", "kind": "milestone", "label": "Published", "source": "certfr_avis \u00b7 CERTFR-2026-AVI-1415", "record": "CERTFR-2026-AVI-1415", "field": "initial_release_date", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-29T00:00:00Z", "date_only": false, "value": "2026-10-29T00:00:00.000000", "kind": "other", "label": "Revision date", "source": "certfr_avis \u00b7 CERTFR-2026-AVI-1415", "record": "CERTFR-2026-AVI-1415", "field": "revisions.0.revision_date", "linked_record": true}, {"timestamp": "2026-10-29T03:34:31.666Z", "date_only": false, "value": "2026-10-29T03:34:31.666199Z", "kind": "sighting", "label": "Seen", "source": "https://bsky.app/profile/securityonline.bsky.social/post/3myydhr7vft22", "record": "CVE-2026-110985", "field": "creation_timestamp", "uuid": "e99dbb6b-68da-4d79-b458-3a8e523406d0", "content": "Apache Kafka fixes 12 vulnerabilities, including CVE-2026-110985, which skips JWT signature verification and grants full cluster access. 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