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vuln-cve/data/2026/91xxx/CVE-2026-91147.json
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{
"dataType": "CVE_RECORD",
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"cveMetadata": {
"cveId": "CVE-2026-91147",
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"state": "PUBLISHED",
"assignerShortName": "redhat",
"dateReserved": "2026-09-14T20:35:52.198Z",
"datePublished": "2026-09-18T16:43:51.546Z",
"dateUpdated": "2026-11-11T19:09:05.520Z"
},
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"title": "Cockpit: cockpit: denial of service in `cockpit-ws` due to url-root handling without a trailing slash",
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"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",
"version": "3.1"
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"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."
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"name": "RHSA-2026:94485",
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],
"datePublic": "2026-09-18T16:29:00.000Z",
"problemTypes": [
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"description": "Reachable Assertion",
"lang": "en",
"type": "CWE"
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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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{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-22T16:23:18.184024Z",
"id": "CVE-2026-91147",
"options": [
{
"Exploitation": "poc"
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"role": "CISA Coordinator",
"version": "2.0.3"
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],
"title": "CISA ADP Vulnrichment",
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