150 lines
6.5 KiB
JSON
150 lines
6.5 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-2026-49446",
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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": "2026-05-30T02:43:33.106Z",
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"datePublished": "2026-09-15T14:31:24.778Z",
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"dateUpdated": "2026-09-15T14:50:54.216Z"
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},
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"containers": {
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"cna": {
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"title": "Cosmos: Authentication bypass via forward-auth header smuggling on Constellation tunnel in Cosmos-Server",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-285",
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"lang": "en",
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"description": "CWE-285: Improper Authorization",
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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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"descriptions": [
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{
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"cweId": "CWE-290",
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"lang": "en",
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"description": "CWE-290: Authentication Bypass by Spoofing",
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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": "LOW",
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"attackVector": "ADJACENT_NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 6.1,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "HIGH",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/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/azukaar/Cosmos-Server/security/advisories/GHSA-2rx5-2g7j-2659",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/azukaar/Cosmos-Server/security/advisories/GHSA-2rx5-2g7j-2659"
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},
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{
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"name": "https://github.com/azukaar/Cosmos-Server/commit/59c561d686c8f9843b3e092b50f6346c481d8bbf",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/azukaar/Cosmos-Server/commit/59c561d686c8f9843b3e092b50f6346c481d8bbf"
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},
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{
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"name": "https://github.com/azukaar/Cosmos-Server/releases/tag/v0.22.19",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/azukaar/Cosmos-Server/releases/tag/v0.22.19"
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}
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],
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"affected": [
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{
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"vendor": "azukaar",
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"product": "Cosmos-Server",
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"versions": [
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{
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"version": "< 0.22.19",
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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": "2026-09-15T14:31:24.778Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. Prior to 0.22.19, tokenMiddleware in src/proxy/routerGen.go can return through the Constellation tunnel bypass before removing x-cosmos-user, x-cosmos-role, x-cosmos-user-role, and x-cosmos-mfa headers and before invoking AdminOnlyWithRedirect. An attacker with a valid x-cstln-auth API key for an enrolled device who reaches Cosmos through the Constellation Nebula tunnel can supply a chosen x-cosmos-user value to a route with AuthEnabled enabled when the upstream application trusts that forward-auth header. The request can bypass Cosmos JWT, password, MFA, and AdminOnly checks, allowing user impersonation and admin-tier reads or writes exposed by the proxied application. This issue is fixed in version 0.22.19."
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}
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],
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"source": {
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"advisory": "GHSA-2rx5-2g7j-2659",
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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/azukaar/Cosmos-Server/security/advisories/GHSA-2rx5-2g7j-2659",
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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": "2026-09-15T14:50:32.130417Z",
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"id": "CVE-2026-49446",
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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": "total"
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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": "2026-09-15T14:50:54.216Z"
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}
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}
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]
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}
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} |