{"api_version":"1","generated_at":"2026-10-12T22:05:59+00:00","cve":"CVE-2026-83535","urls":{"html":"https://cve.report/CVE-2026-83535","api":"https://cve.report/api/cve/CVE-2026-83535.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-83535","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-83535"},"summary":{"title":"Openstack-network-exporter: basic-auth uses plaintext password storage and non-constant-time comparison","description":"A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security (TLS), the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open vSwitch (OVS) and Open Virtual Network (OVN) dataplane metrics without credentials. Consequently, an attacker can enumerate bridge names, port counters, OVN controller state, and host topology, leading to information disclosure.","state":"PUBLISHED","assigner":"redhat","published_at":"2026-10-12 19:16:39","updated_at":"2026-10-12 19:16:39"},"problem_types":["CWE-208","CWE-208 Observable Timing Discrepancy"],"metrics":[{"version":"3.1","source":"secalert@redhat.com","type":"Primary","score":"7.4","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.4","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2526402","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2526402","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://access.redhat.com/security/cve/CVE-2026-83535","name":"https://access.redhat.com/security/cve/CVE-2026-83535","refsource":"secalert@redhat.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-83535","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83535","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","version":"","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-08-31T00:00:00.000Z","lang":"en","value":"Reported to Red Hat."},{"source":"CNA","time":"2026-10-12T18:30:36.664Z","lang":"en","value":"Made public."}],"solutions":[],"workarounds":[{"source":"CNA","title":"","value":"To mitigate this issue, restrict access to the `openstack-network-exporter` metrics endpoint (TCP port 1981) to trusted networks or localhost. This can be achieved by configuring firewall rules to block external access to port 1981 or by explicitly setting the `HttpListen` configuration to `127.0.0.1:1981` to bind only to the localhost interface. If the `HttpListen` configuration is changed, the `openstack-network-exporter` service may require a restart or reload for the changes to take effect.","time":"","lang":"en"}],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"],"defaultStatus":"affected","packageName":"rhoso-operators/openstack-network-exporter-rhel9","product":"Red Hat OpenStack Platform 18.0","vendor":"Red Hat"}],"datePublic":"2026-10-12T18:30:36.664Z","descriptions":[{"lang":"en","value":"A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security (TLS), the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open vSwitch (OVS) and Open Virtual Network (OVN) dataplane metrics without credentials. Consequently, an attacker can enumerate bridge names, port counters, OVN controller state, and host topology, leading to information disclosure."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Moderate"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-208","description":"Observable Timing Discrepancy","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-12T18:50:25.262Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-83535"},{"name":"RHBZ#2526402","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2526402"}],"timeline":[{"lang":"en","time":"2026-08-31T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-10-12T18:30:36.664Z","value":"Made public."}],"title":"Openstack-network-exporter: basic-auth uses plaintext password storage and non-constant-time comparison","workarounds":[{"lang":"en","value":"To mitigate this issue, restrict access to the `openstack-network-exporter` metrics endpoint (TCP port 1981) to trusted networks or localhost. This can be achieved by configuring firewall rules to block external access to port 1981 or by explicitly setting the `HttpListen` configuration to `127.0.0.1:1981` to bind only to the localhost interface. If the `HttpListen` configuration is changed, the `openstack-network-exporter` service may require a restart or reload for the changes to take effect."}],"x_generator":{"engine":"cvelib 1.8.0"},"x_redhatCweChain":"CWE-208: Observable Timing Discrepancy"}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2026-83535","datePublished":"2026-10-12T18:50:25.262Z","dateReserved":"2026-08-31T16:53:08.479Z","dateUpdated":"2026-10-12T18:50:25.262Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-12 19:16:39","lastModifiedDate":"2026-10-12 19:16:39","problem_types":["CWE-208","CWE-208 Observable Timing Discrepancy"],"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":5.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"83535","Ordinal":"1","Title":"Openstack-network-exporter: basic-auth uses plaintext password s","CVE":"CVE-2026-83535","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"83535","Ordinal":"1","NoteData":"A flaw was found in openstack-network-exporter. When an operator configures user authentication but omits or misconfigures Transport Layer Security (TLS), the basic authentication mechanism is silently bypassed. This fail-open design allows an adjacent network attacker to access sensitive Open vSwitch (OVS) and Open Virtual Network (OVN) dataplane metrics without credentials. Consequently, an attacker can enumerate bridge names, port counters, OVN controller state, and host topology, leading to information disclosure.","Type":"Description","Title":"Openstack-network-exporter: basic-auth uses plaintext password s"}]}}}