197 lines
12 KiB
JSON
197 lines
12 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-2026-71502",
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"assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
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"state": "PUBLISHED",
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"assignerShortName": "CIRCL",
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"dateReserved": "2026-08-06T20:29:59.894Z",
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"datePublished": "2026-08-06T20:30:04.442Z",
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"dateUpdated": "2026-08-08T21:05:36.527Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "cti-transmute",
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"repo": "https://github.com/MISP/cti-transmute",
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"vendor": "misp",
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"versions": [
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{
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"lessThanOrEqual": "1.4.0",
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"status": "affected",
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"version": "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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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "Jeroen Pinoy"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Christian Studer"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>CTI-Transmute contains a stored cross-site scripting vulnerability caused by insufficient neutralization of Vue template expression delimiters in server-rendered user-controlled data.</p><p>An unauthenticated attacker can create a public conversion whose name or description contains a malicious Vue expression using the application's configured <code>[[ ... ]]</code> delimiters. User profile names may provide an additional injection vector. Although Jinja HTML escaping is applied, the resulting value is subsequently included in a DOM region compiled by Vue.</p><p>Vue interprets the attacker-controlled value as a template expression rather than ordinary text. By accessing the JavaScript <code>Function</code> constructor from within the expression, an attacker can execute arbitrary JavaScript in the security context of the CTI-Transmute origin. The application's nonce-based Content Security Policy does not prevent exploitation because the Vue runtime compiler requires the <code>unsafe-eval</code> policy exception.</p><p>The malicious payload is stored by the application and executed whenever another user opens an affected page, such as the public conversion detail page. The victim may be a normal user or an administrator. Successful exploitation could allow the attacker to:</p><ul><li>Access data available to the victim through the application.</li><li>Extract API keys, tokens, or other sensitive information exposed to the page.</li><li>Perform authenticated actions using the victim's session.</li><li>Modify conversions or other application data.</li><li>Escalate the impact by targeting an administrator.</li></ul><p>A demonstrated payload can use <code>[].constructor.constructor(...)</code> to obtain the JavaScript <code>Function</code> constructor and execute arbitrary code. The regression tests also show that a short first-stage payload could retrieve an uncapped conversion description and evaluate a larger second-stage payload.</p><p>The patch addresses the vulnerability by registering a global Jinja <code>finalize</code> hook that inserts a zero-width Unicode word joiner inside every Vue delimiter found in server-rendered values. This prevents Vue from recognizing the values as template expressions while preserving their visible representation.</p><br>"
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}
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],
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"value": "CTI-Transmute contains a stored cross-site scripting vulnerability caused by insufficient neutralization of Vue template expression delimiters in server-rendered user-controlled data.\n\nAn unauthenticated attacker can create a public conversion whose name or description contains a malicious Vue expression using the application's configured [[ ... ]] delimiters. User profile names may provide an additional injection vector. Although Jinja HTML escaping is applied, the resulting value is subsequently included in a DOM region compiled by Vue.\n\nVue interprets the attacker-controlled value as a template expression rather than ordinary text. By accessing the JavaScript Function constructor from within the expression, an attacker can execute arbitrary JavaScript in the security context of the CTI-Transmute origin. The application's nonce-based Content Security Policy does not prevent exploitation because the Vue runtime compiler requires the unsafe-eval policy exception.\n\nThe malicious payload is stored by the application and executed whenever another user opens an affected page, such as the public conversion detail page. The victim may be a normal user or an administrator. Successful exploitation could allow the attacker to:\n\n * Access data available to the victim through the application.\n * Extract API keys, tokens, or other sensitive information exposed to the page.\n * Perform authenticated actions using the victim's session.\n * Modify conversions or other application data.\n * Escalate the impact by targeting an administrator.\n\n\nA demonstrated payload can use [].constructor.constructor(...) to obtain the JavaScript Function constructor and execute arbitrary code. The regression tests also show that a short first-stage payload could retrieve an uncapped conversion description and evaluate a larger second-stage payload.\n\nThe patch addresses the vulnerability by registering a global Jinja finalize hook that inserts a zero-width Unicode word joiner inside every Vue delimiter found in server-rendered values. This prevents Vue from recognizing the values as template expressions while preserving their visible representation."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-63",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-63 Cross-Site Scripting (XSS)"
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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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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "NETWORK",
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"baseScore": 5.1,
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"baseSeverity": "MEDIUM",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "LOW",
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"subIntegrityImpact": "LOW",
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"userInteraction": "ACTIVE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "NONE",
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"vulnConfidentialityImpact": "LOW",
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"vulnIntegrityImpact": "LOW",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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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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"cweId": "CWE-79",
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"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')",
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"lang": "en",
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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-1336",
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"description": "CWE-1336",
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"lang": "en",
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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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"providerMetadata": {
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"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
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"shortName": "CIRCL",
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"dateUpdated": "2026-08-08T21:05:36.527Z"
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},
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"references": [
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/MISP/cti-transmute/commit/ecfdaef63860a071c6f07afd30156ca77a77ad2b"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/MISP/cti-transmute/commit/522fa8ff8223b12a6128ea3fc2344a77b7b9108d"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/MISP/cti-transmute/commit/ad8bf2b8031491cefb552314ef7ff6f4148ca95a"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/MISP/cti-transmute/commit/4f43c9181a00262bec2a6dfbc9ff9c50d534e918"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "Unauthenticated Stored Vue Template Injection Leads to Cross-Site Scripting in CTI-Transmute",
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"x_generator": {
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"engine": "Vulnogram 0.2.0"
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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": "2026-08-07T13:57:26.854958Z",
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"id": "CVE-2026-71502",
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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": "2026-08-07T13:57:37.626Z"
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}
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}
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]
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}
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} |