133 lines
5.9 KiB
JSON
133 lines
5.9 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-2026-33534",
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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": "2026-03-20T18:05:11.831Z",
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"datePublished": "2026-04-13T19:20:04.414Z",
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"dateUpdated": "2026-04-14T16:28:58.299Z"
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},
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"containers": {
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"cna": {
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"title": "EspoCRM has authenticated SSRF via internal-host validation bypass using alternative IPv4 notation",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-918",
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"lang": "en",
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"description": "CWE-918: Server-Side Request Forgery (SSRF)",
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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": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "NONE",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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/espocrm/espocrm/security/advisories/GHSA-h7gx-8gwv-7g73",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/espocrm/espocrm/security/advisories/GHSA-h7gx-8gwv-7g73"
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},
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{
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"name": "https://github.com/espocrm/espocrm/releases/tag/9.3.4",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/espocrm/espocrm/releases/tag/9.3.4"
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}
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],
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"affected": [
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{
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"vendor": "espocrm",
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"product": "espocrm",
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"versions": [
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{
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"version": "< 9.3.4",
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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": "2026-04-13T19:20:04.414Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "EspoCRM is an open source customer relationship management application. Versions 9.3.3 and below have an authenticated Server-Side Request Forgery (SSRF) vulnerability that allows bypassing the internal-host validation logic by using alternative IPv4 representations such as octal notation (e.g., 0177.0.0.1 instead of 127.0.0.1). This is caused by HostCheck::isNotInternalHost() function relying on PHP's filter_var(..., FILTER_VALIDATE_IP), which does not recognize alternative IP formats, causing the validation to fall through to a DNS lookup that returns no records and incorrectly treats the host as safe, however the cURL subsequently normalizes the address and connects to the loopback destination. Through the confirmed /api/v1/Attachment/fromImageUrl endpoint, an authenticated user can force the server to make requests to loopback-only services and store the fetched response as an attachment. This vulnerability is distinct from CVE-2023-46736 (which involved redirect-based SSRF) and may allow access to internal resources reachable from the application runtime. This issue has been fixed in version 9.3.4."
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}
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],
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"source": {
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"advisory": "GHSA-h7gx-8gwv-7g73",
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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/espocrm/espocrm/security/advisories/GHSA-h7gx-8gwv-7g73",
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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": "2026-04-14T15:28:00.570907Z",
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"id": "CVE-2026-33534",
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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": "2026-04-14T16:28:58.299Z"
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}
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}
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]
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}
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} |