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        "cveId": "CVE-2026-91147",
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        "state": "PUBLISHED",
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        "dateReserved": "2026-09-14T20:35:52.198Z",
        "datePublished": "2026-09-18T16:43:51.546Z",
        "dateUpdated": "2026-10-16T12:19:08.640Z"
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    "containers": {
        "cna": {
            "title": "Cockpit: cockpit: denial of service in `cockpit-ws` due to url-root handling without a trailing slash",
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                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw was found in `cockpit-ws`. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a specially crafted request. When the `WebService.UrlRoot` is configured and a request is made to the exact URL-root prefix without a trailing slash, `cockpit-ws` can terminate unexpectedly. This issue leads to the unavailability of the Cockpit web service."
                }
            ],
            "affected": [
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                    "product": "Red Hat Enterprise Linux 10",
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                    "product": "Red Hat Enterprise Linux 8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "cockpit",
                    "defaultStatus": "affected",
                    "cpes": [
                        "cpe:/o:redhat:enterprise_linux:8"
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "cockpit",
                    "defaultStatus": "affected",
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                        "cpe:/o:redhat:enterprise_linux:9"
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                    "packageName": "devspaces/udi-base-rhel10",
                    "defaultStatus": "affected",
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            "references": [
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                    "url": "https://access.redhat.com/security/cve/CVE-2026-91147",
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            "datePublic": "2026-09-18T16:29:00.000Z",
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                            "cweId": "CWE-617",
                            "description": "Reachable Assertion",
                            "lang": "en",
                            "type": "CWE"
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                    ]
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            ],
            "x_redhatCweChain": "CWE-617: Reachable Assertion",
            "workarounds": [
                {
                    "lang": "en",
                    "value": "A code fix is being pursued for the affected streams. Until updated packages are available, avoid configuring a non-empty [WebService] UrlRoot in cockpit-ws where feasible. If a non-empty UrlRoot is required, configure the front-end proxy or TLS terminator in front of cockpit-ws to rewrite or redirect requests for the exact configured prefix (for example, /cockpit) to the trailing-slash form (for example, /cockpit/) before forwarding them, so the exact-prefix request never reaches cockpit-ws unnormalized. Deployments whose front end already normalizes or redirects such requests are not exposed through that route."
                }
            ],
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-05-18T03:32:25.000Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-09-18T16:29:00.000Z",
                    "value": "Made public."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "This issue was discovered by Found by AISLE in partnership with Red Hat."
                }
            ],
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                                "timestamp": "2026-09-22T16:23:18.184024Z",
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                                        "Exploitation": "poc"
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