230 lines
9.4 KiB
JSON
230 lines
9.4 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-2026-76834",
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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": "2026-08-19T20:34:00.154Z",
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"datePublished": "2026-09-17T15:16:50.748Z",
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"dateUpdated": "2026-09-18T18:04:44.762Z"
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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": "2026-09-17T15:16:50.748Z"
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},
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"datePublic": "2026-07-31T00:00:00.000Z",
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"title": "b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key",
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"descriptions": [
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{
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"lang": "en",
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"value": "b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in param_check_serialized_array() fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST requests to htsrv/call_plugin.php that bypass validation and reach unserialize(), instantiating arbitrary PHP objects with attacker-chosen properties that may enable code execution if suitable POP gadget chains exist."
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}
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],
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"tags": [
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"unsupported-when-assigned"
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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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"description": "Deserialization of Untrusted Data",
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"cweId": "CWE-502",
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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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"vendor": "b2evolution",
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"product": "b2evolution CMS",
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"repo": "https://github.com/b2evolution/b2evolution",
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "6.7.8",
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"lessThanOrEqual": "7.2.5",
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"status": "affected",
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"versionType": "semver"
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}
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],
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"packageURL": "pkg:github/b2evolution/b2evolution"
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:b2evolution:b2evolution_cms:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.7.8",
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"versionEndIncluding": "7.2.5"
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}
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]
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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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"cvssV4_0": {
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"version": "4.0",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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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": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 9.2,
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"baseSeverity": "CRITICAL"
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}
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},
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"attackVector": "NETWORK",
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"attackComplexity": "HIGH",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"baseScore": 8.1,
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"baseSeverity": "HIGH"
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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://gist.github.com/axg11/3e29501c33f6e1e05ac2a00107afd64e",
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"tags": [
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"technical-description"
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]
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},
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{
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"url": "https://github.com/b2evolution/b2evolution/blob/7.2.5/inc/_core/_param.funcs.php#L2860",
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"tags": [
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"technical-description"
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]
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},
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{
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"url": "https://github.com/b2evolution/b2evolution/blob/7.2.5/htsrv/call_plugin.php#L49",
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"tags": [
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"technical-description"
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]
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},
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{
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"url": "https://github.com/b2evolution/b2evolution/commit/25c21cf9cc4261324001f9039509710b37ee2c4d",
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"tags": [
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"patch"
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],
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"name": "Incomplete fix for CVE-2016-8901 (1 of 2)"
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},
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{
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"url": "https://github.com/b2evolution/b2evolution/commit/999b5ad1d59760d7e450ceb541f55432fc74cd27",
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"tags": [
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"patch"
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],
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"name": "Incomplete fix for CVE-2016-8901 (2 of 2)"
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},
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{
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"url": "https://github.com/b2evolution/b2evolution/commit/335abf09bcea61717bd00bc1e3889f8100ebd1bb",
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"tags": [
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"technical-description",
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"patch"
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],
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"name": "Introduces the flawed regular expression, first released in 6.7.8"
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},
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{
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"url": "https://b2evolution.net/news/2022/03/26/2022-update-eol",
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"tags": [
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"vendor-advisory"
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],
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"name": "b2evolution CMS end-of-life announcement"
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},
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{
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"url": "https://github.com/b2evolution/b2evolution",
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"tags": [
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"product"
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]
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},
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{
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"name": "VulnCheck Advisory: b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/b2evolution-cms-6.7.8-through-7.2.5-object-injection-via-negative-integer-array-key"
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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": "Adrian Gaitan",
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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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"x_generator": {
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"engine": "vulncheck-endgame"
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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": "2026-09-18T18:04:36.961014Z",
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"id": "CVE-2026-76834",
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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": "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": "2026-09-18T18:04:44.762Z"
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}
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}
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]
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}
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} |