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GHSA-c825-6ph3-4h84 GHSA-c825-6ph3-4h84
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‎advisories/github-reviewed/2026/03/GHSA-c825-6ph3-4h84/GHSA-c825-6ph3-4h84.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-c825-6ph3-4h84",
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"modified": "2026-03-04T22:19:25Z",
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"published": "2026-03-04T09:31:07Z",
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"aliases": [
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"CVE-2025-66168"
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],
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"summary": "Apache ActiveMQ is Vulnerable to Integer Overflow or Wraparound",
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"details": "Apache ActiveMQ does not properly validate the remaining length field which may lead to an overflow during the decoding of malformed packets. When this integer overflow occurs, ActiveMQ may incorrectly compute the total Remaining Length and subsequently misinterpret the payload as multiple MQTT control packets which makes the broker susceptible to unexpected behavior when interacting with non-compliant clients. This behavior violates the MQTT v3.1.1 specification, which restricts Remaining Length to a maximum of 4 bytes. The scenario occurs on established connections after the authentication process. Brokers that are not enabling mqtt transport connectors are not impacted.\n\nThis issue affects Apache ActiveMQ: before 5.19.2, 6.0.0 to 6.1.8, and 6.2.0\n\nUsers are recommended to upgrade to version 5.19.2, 6.1.9, or 6.2.1, which fixes the issue.",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:apache-activemq"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "5.19.2"
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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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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:apache-activemq"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "6.0.0"
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},
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{
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"fixed": "6.1.9"
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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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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:apache-activemq"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "6.2.0"
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},
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{
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"fixed": "6.2.1"
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}
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]
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}
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],
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"versions": [
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"6.2.0"
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]
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},
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{
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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:activemq-all"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "5.19.2"
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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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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:activemq-all"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "6.0.0"
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},
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{
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"fixed": "6.1.9"
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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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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:activemq-all"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "6.2.0"
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},
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{
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"fixed": "6.2.1"
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}
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]
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}
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],
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"versions": [
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"6.2.0"
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]
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},
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{
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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:activemq-mqtt"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "5.19.2"
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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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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:activemq-mqtt"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "6.0.0"
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},
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{
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"fixed": "6.1.9"
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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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"package": {
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"ecosystem": "Maven",
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"name": "org.apache.activemq:activemq-mqtt"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "6.2.0"
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},
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{
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"fixed": "6.2.1"
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}
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]
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}
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],
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"versions": [
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"6.2.0"
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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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"type": "ADVISORY",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66168"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/apache/activemq"
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},
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{
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"type": "WEB",
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"url": "https://lists.apache.org/thread/13n8mkrb2jf2y6yyhpgrkmpqcm7djyto"
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},
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{
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"type": "WEB",
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"url": "http://www.openwall.com/lists/oss-security/2026/03/03/5"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-190"
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],
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"severity": "MODERATE",
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"github_reviewed": true,
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"github_reviewed_at": "2026-03-04T22:19:25Z",
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"nvd_published_at": "2026-03-04T09:15:54Z"
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}
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}

‎advisories/unreviewed/2026/03/GHSA-c825-6ph3-4h84/GHSA-c825-6ph3-4h84.json‎

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