CVE-2026-88899
🗓️ 10 Sep 2026 15:28:51Reported by VulnCheckType 
cve🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 46 Views🌐 WEB
| Reporter | Title | Published | Views | Family All 10 |
|---|---|---|---|---|
 | CVE-2026-88899 | 10 Sep 202617:10 | – | circl |
 | CVE-2026-88899 knowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory Header | 10 Sep 202615:28 | – | cvelist |
 | EUVD-2026-75579 | 10 Sep 202615:28 | – | euvd |
 | Duplicate Advisory: Knowns Sandbox Escape: Unauthenticated Header Injection Grants AI Agent Unrestricted Access to Host Filesystem | 10 Sep 202618:31 | – | github |
 | CVE-2026-88899 | 21 Oct 202605:08 | – | kitploit |
 | CVE-2026-88899 | 10 Sep 202615:28 | – | mend |
 | CVE-2026-88899 | 10 Sep 202616:18 | – | nvd |
 | PT-2026-89477 | 10 Sep 202600:00 | – | ptsecurity |
 | CVE-2026-88899: External Control of File Name or Path | 10 Sep 202600:00 | – | rapid7 |
 | CVE-2026-88899 knowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory Header | 10 Sep 202615:28 | – | vulnrichment |
Node
[
{
"vendor": "knowns-dev",
"product": "knowns",
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/knowns",
"versions": [
{
"version": "0",
"status": "affected",
"versionType": "semver",
"lessThan": "0.31.0"
},
{
"version": "0.31.0",
"status": "unaffected",
"versionType": "semver"
}
]
}
]| Parameter | Position | Path | Description | CWE |
|---|---|---|---|---|
| x-opencode-directory | header | /api/opencode | Arbitrary directory path can be supplied via X-Opencode-Directory header to perform file operations outside the project root on the host through the /api/opencode proxy endpoint. | CWE-73 |
Data
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11 Sep 2026 21:17Current
6.2Medium risk
Vulners AI Score6.2
CVSS 49.3
CVSS 3.19.8
EPSS0.00809
SSVC