111 lines
4.4 KiB
JSON
111 lines
4.4 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-2026-77164",
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"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
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"state": "PUBLISHED",
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"assignerShortName": "hackerone",
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"dateReserved": "2026-08-20T15:00:00.606Z",
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"datePublished": "2026-09-18T01:26:04.650Z",
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"dateUpdated": "2026-09-18T19:41:07.400Z"
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},
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"containers": {
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"cna": {
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"descriptions": [
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{
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"lang": "en",
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"value": "Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST /apps/circles/event/ and POST /apps/circles/incoming/ reach this code path, allowing any unauthenticated user to force the server to issue a GET request to an internal address.\n\nThe response body of the internal request is never returned to the requester, so this is blind SSRF: an attacker can determine whether an internal service is reachable, but cannot read its response contents through this endpoint alone."
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}
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],
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"affected": [
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{
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"defaultStatus": "unaffected",
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"vendor": "Nextcloud",
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"product": "Server",
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"versions": [
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{
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"version": "31.0.0",
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"status": "affected",
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"lessThanOrEqual": "32.0.0",
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"versionType": "semver"
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}
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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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"url": "https://hackerone.com/reports/3303283"
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}
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],
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"metrics": [
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{
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"cvssV3_0": {
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"version": "3.0",
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"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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"baseScore": 6.2,
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"baseSeverity": "MEDIUM"
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"lang": "en",
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"cweId": "CWE-918",
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"description": "CWE-918 Server-Side Request Forgery (SSRF)"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Balvant Chavda (0x0doteth)",
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"type": "finder"
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}
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],
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"providerMetadata": {
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"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
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"shortName": "hackerone",
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"dateUpdated": "2026-09-18T01:26:04.650Z"
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}
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},
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"adp": [
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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": "2026-09-18T19:40:57.953385Z",
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"id": "CVE-2026-77164",
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"options": [
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{
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"Exploitation": "none"
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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": "2026-09-18T19:41:07.400Z"
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}
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}
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]
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}
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} |