{"id":"CVE-2020-8595","aliases":["EUVD-2020-29443","GHSA-6mcc-fxc5-58cv","RHSA-2020:0477"],"status":"published","title":"Istio 1.3 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path...","description":"Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02627,"percentile":0.85608,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2020-02-12T14:10:15Z","modified":"2026-10-24T10:50:03Z","fixes":[{"ecosystem":"Red Hat:service_mesh:1.0::el8","package":"servicemesh-proxy","fixed_in":["0:1.0.7-1.el8"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Red Hat:service_mesh:1.0::el8","package":"servicemesh-proxy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.7-1.el8"}]}]}],"products":[{"vendor":"istio","product":"istio"},{"vendor":"redhat","product":"openshift_service_mesh"}],"references":[{"url":"https://github.com/istio/istio/commits/master","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://istio.io/news/security/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2020:0477","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Third Party Advisory","advisory"]},{"url":"https://access.redhat.com/security/cve/cve-2020-8595","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Third Party Advisory","advisory"]},{"url":"https://istio.io/news/security/istio-security-2020-001/","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix","article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Mitigation","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8595","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6mcc-fxc5-58cv"},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1798247","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_0477.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2020-8595","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-8595","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-8595","description":"Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.","status":"published","published":"2020-02-12T14:10:15Z","modified":"2024-08-04T10:03:45.884Z","updated_at":"2026-11-02T14:35:50.545879Z"}],"euvd":[{"id":"EUVD-2020-29443","description":"Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.","status":"published","published":"2020-02-12T14:10:15Z","modified":"2024-08-04T10:03:45Z","updated_at":"2026-11-03T03:07:57.14802Z"}],"ghsa":[{"id":"GHSA-6mcc-fxc5-58cv","title":"Istio 1.3 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path...","description":"Istio 1.3 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.","status":"published","published":"2022-05-24T17:08:50Z","modified":"2023-01-29T05:01:28Z","updated_at":"2026-11-02T14:44:49.860954Z"}],"nvd":[{"id":"CVE-2020-8595","description":"Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.","status":"published","published":"2020-02-12T15:15:14.727Z","modified":"2026-06-17T03:26:36.727Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:05:53.837808Z"}],"osv":[{"id":"CVE-2020-8595","description":"Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.","status":"published","published":"2020-02-12T15:15:14.727Z","modified":"2026-10-24T10:50:03.783049638Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"RHSA-2020:0477","title":"Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.0.7 servicemesh-proxy security update","status":"published","published":"2024-09-16T03:30:23Z","modified":"2026-03-18T11:30:46.541772Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:06.535721Z"}]}}