209 lines
8.3 KiB
JSON
209 lines
8.3 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-2026-76875",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-08-19T21:47:08.936Z",
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"datePublished": "2026-09-29T12:45:19.797Z",
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"dateUpdated": "2026-11-08T14:08:53.277Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-11-08T14:08:53.277Z"
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},
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"datePublic": "2026-09-19T00:00:00.000Z",
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"title": "PyPy pyexpat ExternalEntityParserCreate Use-After-Free",
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"descriptions": [
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{
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"lang": "en",
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"value": "PyPy before versions 3.11.16 and 3.12.14 contains a use-after-free vulnerability in the pyexpat module's ExternalEntityParserCreate function that allows attackers to corrupt memory by supplying a crafted XML document to applications that create external-entity sub-parsers without retaining a reference to the parent parser. The child parser retains a raw C back-pointer to the parent parser struct while PyPy's tracing garbage collector can free the parent's C struct, causing bundled libexpat to dereference the freed pointer on every parsed token, producing memory corruption."
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}
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],
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"tags": [
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"x_open-source"
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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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"lang": "en",
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"cweId": "CWE-416",
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"description": "Use After Free",
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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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"affected": [
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{
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"defaultStatus": "unaffected",
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"vendor": "PyPy",
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"product": "PyPy",
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"packageURL": "pkg:github/pypy/pypy",
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"repo": "https://github.com/pypy/pypy",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"versionType": "semver",
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"lessThan": "3.11.16"
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},
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{
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"status": "affected",
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"version": "3.12.0",
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"versionType": "semver",
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"lessThan": "3.12.14"
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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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"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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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "LOW",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "MEDIUM",
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"baseScore": 6.3,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
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}
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},
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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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"cvssV3_1": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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"availabilityImpact": "NONE",
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"version": "3.1",
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"baseSeverity": "MEDIUM",
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"baseScore": 5.3,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
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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://doc.pypy.org/release-v8.0.0.html",
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"name": "Release Notes",
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"tags": [
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"release-notes"
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]
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},
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{
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"url": "https://github.com/pypy/pypy/releases/tag/release-pypy3.12-v8.0.0",
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"name": "PyPy release-pypy3.12-v8.0.0 Release Notes",
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"tags": [
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"patch",
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"release-notes"
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]
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},
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{
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"url": "https://github.com/pypy/pypy/releases/tag/release-pypy3.11-v8.0.0",
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"name": "PyPy release-pypy3.11-v8.0.0 Release Notes",
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"tags": [
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"patch",
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"release-notes"
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]
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},
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{
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"url": "https://www.vulncheck.com/advisories/pypy-pyexpat-externalentityparsercreate-use-after-free",
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"tags": [
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"third-party-advisory"
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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": "Fabian Wahle (Hap Security)",
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"type": "finder"
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},
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{
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"lang": "en",
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"value": "VulnCheck",
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"type": "coordinator"
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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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"x_generator": {
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"engine": "vulncheck"
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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": "2026-10-02T12:07:14.237053Z",
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"id": "CVE-2026-76875",
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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": "yes"
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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": "2026-10-02T12:07:30.652Z"
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}
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}
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]
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}
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} |