126 lines
5.3 KiB
JSON
126 lines
5.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-33490",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-03-20T16:16:48.971Z",
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"datePublished": "2026-03-26T17:19:15.956Z",
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"dateUpdated": "2026-03-26T18:23:39.653Z"
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},
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"containers": {
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"cna": {
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"title": "h3: Missing Path Segment Boundary Check in `mount()` Causes Middleware Execution on Unrelated Prefix-Matching Routes",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-706",
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"lang": "en",
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"description": "CWE-706: Use of Incorrectly-Resolved Name or Reference",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 3.7,
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"baseSeverity": "LOW",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/h3js/h3/security/advisories/GHSA-2j6q-whv2-gh6w",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/h3js/h3/security/advisories/GHSA-2j6q-whv2-gh6w"
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}
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],
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"affected": [
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{
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"vendor": "h3js",
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"product": "h3",
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"versions": [
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{
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"version": ">= 2.0.1-alpha.0, < 2.0.1-rc.17",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-03-26T17:19:15.956Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "H3 is a minimal H(TTP) framework. In versions 2.0.0-0 through 2.0.1-rc.16, the `mount()` method in h3 uses a simple `startsWith()` check to determine whether incoming requests fall under a mounted sub-application's path prefix. Because this check does not verify a path segment boundary (i.e., that the next character after the base is `/` or end-of-string), middleware registered on a mount like `/admin` will also execute for unrelated routes such as `/admin-public`, `/administrator`, or `/adminstuff`. This allows an attacker to trigger context-setting middleware on paths it was never intended to cover, potentially polluting request context with unintended privilege flags. Version 2.0.2-rc.17 contains a patch."
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}
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],
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"source": {
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"advisory": "GHSA-2j6q-whv2-gh6w",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/h3js/h3/security/advisories/GHSA-2j6q-whv2-gh6w",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-03-26T17:46:14.997707Z",
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"id": "CVE-2026-33490",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-03-26T18:23:39.653Z"
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}
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}
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]
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}
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} |