126 lines
5.5 KiB
JSON
126 lines
5.5 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-2026-53593",
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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": "2026-06-09T19:39:52.403Z",
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"datePublished": "2026-07-20T19:52:33.060Z",
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"dateUpdated": "2026-07-21T14:56:31.717Z"
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},
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"containers": {
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"cna": {
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"title": "FreeScout Vulnerable to Authenticated Remote Code Execution via incomplete upload extension denylist (.pht) — bypass of CVE-2025-48471",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-434",
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"lang": "en",
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"description": "CWE-434: Unrestricted Upload of File with Dangerous Type",
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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": "HIGH",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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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:H/I:H/A:H",
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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/freescout-help-desk/freescout/security/advisories/GHSA-27vp-fpg8-j8wv",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-27vp-fpg8-j8wv"
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}
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],
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"affected": [
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{
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"vendor": "freescout-help-desk",
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"product": "freescout",
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"versions": [
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{
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"version": "< 1.8.224",
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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": "2026-07-20T19:52:33.060Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the denylist that neutralizes dangerous file uploads (`Helper::$restricted_extensions`) is incomplete: it does not cover the `.pht` extension. The authenticated upload endpoint `POST /uploads/upload` (`SecureController@upload`) stores files with their original extension into the web-accessible directory `storage/app/public/uploads/` (served at `/storage/uploads/`). On the standard Apache + `libapache2-mod-php` deployment, the default handler `<FilesMatch \".+\\.ph(ar|p[3457]?|t|tml)$\">` executes `.pht`, so **any authenticated agent can upload a `.pht` web shell and run arbitrary commands as the web-server user** (`www-data`). This is a direct bypass of the fix for CVE-2025-48471, which added `phtml`/`phar` but not `pht` (nor `phtm`, `phps`). Version 1.8.224 contains an updated fix."
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}
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],
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"source": {
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"advisory": "GHSA-27vp-fpg8-j8wv",
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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/freescout-help-desk/freescout/security/advisories/GHSA-27vp-fpg8-j8wv",
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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": "2026-07-21T13:21:02.831385Z",
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"id": "CVE-2026-53593",
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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": "2026-07-21T14:56:31.717Z"
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}
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}
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]
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}
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} |