ubuntu-cve-2026-43512
Vulnerability from osv_ubuntu
Published
2026-05-12 16:16
Modified
2026-07-09 19:35
Summary
Details
DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
Severity
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libservlet2.4-java",
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},
{
"binary_name": "libservlet2.5-java",
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},
{
"binary_name": "libtomcat6-java",
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},
{
"binary_name": "tomcat6",
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},
{
"binary_name": "tomcat6-admin",
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},
{
"binary_name": "tomcat6-common",
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},
{
"binary_name": "tomcat6-docs",
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},
{
"binary_name": "tomcat6-examples",
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},
{
"binary_name": "tomcat6-extras",
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},
{
"binary_name": "tomcat6-user",
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}
]
},
"package": {
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},
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{
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{
"introduced": "0"
},
{
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}
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}
],
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"6.0.37-1",
"6.0.39-1",
"6.0.39-1ubuntu0.1",
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},
{
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"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
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{
"binary_name": "libservlet3.0-java",
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},
{
"binary_name": "libtomcat7-java",
"binary_version": "7.0.52-1ubuntu0.16+esm2"
},
{
"binary_name": "tomcat7",
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},
{
"binary_name": "tomcat7-admin",
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},
{
"binary_name": "tomcat7-common",
"binary_version": "7.0.52-1ubuntu0.16+esm2"
},
{
"binary_name": "tomcat7-docs",
"binary_version": "7.0.52-1ubuntu0.16+esm2"
},
{
"binary_name": "tomcat7-examples",
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{
"binary_name": "tomcat7-user",
"binary_version": "7.0.52-1ubuntu0.16+esm2"
}
]
},
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"ecosystem": "Ubuntu:Pro:14.04:LTS",
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{
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{
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{
"fixed": "7.0.52-1ubuntu0.16+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.0.42-1",
"7.0.47-1",
"7.0.50-1",
"7.0.52-1",
"7.0.52-1ubuntu0.1",
"7.0.52-1ubuntu0.3",
"7.0.52-1ubuntu0.6",
"7.0.52-1ubuntu0.7",
"7.0.52-1ubuntu0.8",
"7.0.52-1ubuntu0.9",
"7.0.52-1ubuntu0.10",
"7.0.52-1ubuntu0.11",
"7.0.52-1ubuntu0.13",
"7.0.52-1ubuntu0.14",
"7.0.52-1ubuntu0.15",
"7.0.52-1ubuntu0.16",
"7.0.52-1ubuntu0.16+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libservlet3.1-java",
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{
"binary_name": "libtomcat8-java",
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{
"binary_name": "tomcat8",
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},
{
"binary_name": "tomcat8-admin",
"binary_version": "8.0.32-1ubuntu1.13+esm1"
},
{
"binary_name": "tomcat8-common",
"binary_version": "8.0.32-1ubuntu1.13+esm1"
},
{
"binary_name": "tomcat8-docs",
"binary_version": "8.0.32-1ubuntu1.13+esm1"
},
{
"binary_name": "tomcat8-examples",
"binary_version": "8.0.32-1ubuntu1.13+esm1"
},
{
"binary_name": "tomcat8-user",
"binary_version": "8.0.32-1ubuntu1.13+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "tomcat8",
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},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.0.26-1",
"8.0.28-1",
"8.0.30-1",
"8.0.32-1",
"8.0.32-1ubuntu1",
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"8.0.32-1ubuntu1.2",
"8.0.32-1ubuntu1.3",
"8.0.32-1ubuntu1.4",
"8.0.32-1ubuntu1.5",
"8.0.32-1ubuntu1.6",
"8.0.32-1ubuntu1.7",
"8.0.32-1ubuntu1.8",
"8.0.32-1ubuntu1.9",
"8.0.32-1ubuntu1.10",
"8.0.32-1ubuntu1.11",
"8.0.32-1ubuntu1.13",
"8.0.32-1ubuntu1.13+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libservlet3.0-java",
"binary_version": "7.0.68-1ubuntu0.4+esm4"
},
{
"binary_name": "libtomcat7-java",
"binary_version": "7.0.68-1ubuntu0.4+esm4"
},
{
"binary_name": "tomcat7",
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},
{
"binary_name": "tomcat7-admin",
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},
{
"binary_name": "tomcat7-common",
"binary_version": "7.0.68-1ubuntu0.4+esm4"
},
{
"binary_name": "tomcat7-docs",
"binary_version": "7.0.68-1ubuntu0.4+esm4"
},
{
"binary_name": "tomcat7-examples",
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{
"binary_name": "tomcat7-user",
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]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "tomcat7",
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},
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{
"events": [
{
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{
"fixed": "7.0.68-1ubuntu0.4+esm4"
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],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.0.64-1",
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"7.0.68-1ubuntu0.1",
"7.0.68-1ubuntu0.3",
"7.0.68-1ubuntu0.4",
"7.0.68-1ubuntu0.4+esm1",
"7.0.68-1ubuntu0.4+esm2",
"7.0.68-1ubuntu0.4+esm3"
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},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtomcat8-embed-java",
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{
"binary_name": "libtomcat8-java",
"binary_version": "8.5.39-1ubuntu1~18.04.3+esm5"
},
{
"binary_name": "tomcat8",
"binary_version": "8.5.39-1ubuntu1~18.04.3+esm5"
},
{
"binary_name": "tomcat8-admin",
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},
{
"binary_name": "tomcat8-common",
"binary_version": "8.5.39-1ubuntu1~18.04.3+esm5"
},
{
"binary_name": "tomcat8-docs",
"binary_version": "8.5.39-1ubuntu1~18.04.3+esm5"
},
{
"binary_name": "tomcat8-examples",
"binary_version": "8.5.39-1ubuntu1~18.04.3+esm5"
},
{
"binary_name": "tomcat8-user",
"binary_version": "8.5.39-1ubuntu1~18.04.3+esm5"
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]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
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{
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{
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],
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"8.5.21-1ubuntu1",
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"8.5.30-1",
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"8.5.30-1ubuntu1.3",
"8.5.30-1ubuntu1.4",
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"8.5.39-1ubuntu1~18.04.2",
"8.5.39-1ubuntu1~18.04.3",
"8.5.39-1ubuntu1~18.04.3+esm1",
"8.5.39-1ubuntu1~18.04.3+esm2",
"8.5.39-1ubuntu1~18.04.3+esm3",
"8.5.39-1ubuntu1~18.04.3+esm4",
"8.5.39-1ubuntu1~18.04.3+esm5"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libtomcat9-embed-java",
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},
{
"binary_name": "libtomcat9-java",
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{
"binary_name": "tomcat9",
"binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
},
{
"binary_name": "tomcat9-admin",
"binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
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{
"binary_name": "tomcat9-common",
"binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
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{
"binary_name": "tomcat9-docs",
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{
"binary_name": "tomcat9-examples",
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{
"binary_name": "tomcat9-user",
"binary_version": "9.0.16-3ubuntu0.18.04.2+esm8"
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]
},
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"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "tomcat9",
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{
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{
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{
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],
"versions": [
"9.0.16-3~18.04.1",
"9.0.16-3ubuntu0.18.04.1",
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"9.0.16-3ubuntu0.18.04.2+esm2",
"9.0.16-3ubuntu0.18.04.2+esm3",
"9.0.16-3ubuntu0.18.04.2+esm4",
"9.0.16-3ubuntu0.18.04.2+esm5",
"9.0.16-3ubuntu0.18.04.2+esm6",
"9.0.16-3ubuntu0.18.04.2+esm7"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libtomcat9-embed-java",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
},
{
"binary_name": "libtomcat9-java",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
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{
"binary_name": "tomcat9",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
},
{
"binary_name": "tomcat9-admin",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
},
{
"binary_name": "tomcat9-common",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
},
{
"binary_name": "tomcat9-docs",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
},
{
"binary_name": "tomcat9-examples",
"binary_version": "9.0.31-1ubuntu0.9+esm3"
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{
"binary_name": "tomcat9-user",
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]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
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{
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{
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],
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"9.0.24-1",
"9.0.27-1",
"9.0.31-1",
"9.0.31-1ubuntu0.1",
"9.0.31-1ubuntu0.2",
"9.0.31-1ubuntu0.3",
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"9.0.31-1ubuntu0.5",
"9.0.31-1ubuntu0.6",
"9.0.31-1ubuntu0.7",
"9.0.31-1ubuntu0.8",
"9.0.31-1ubuntu0.9",
"9.0.31-1ubuntu0.9+esm1",
"9.0.31-1ubuntu0.9+esm2"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libtomcat9-embed-java",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "libtomcat9-java",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "tomcat9",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "tomcat9-admin",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "tomcat9-common",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "tomcat9-docs",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "tomcat9-examples",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
},
{
"binary_name": "tomcat9-user",
"binary_version": "9.0.58-1ubuntu0.2+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "tomcat9",
"purl": "pkg:deb/ubuntu/tomcat9@9.0.58-1ubuntu0.2+esm4?arch=source\u0026distro=esm-apps/jammy"
},
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{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.58-1ubuntu0.2+esm4"
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],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.0.43-3",
"9.0.54-1",
"9.0.55-1",
"9.0.58-1",
"9.0.58-1ubuntu0.1",
"9.0.58-1ubuntu0.1+esm1",
"9.0.58-1ubuntu0.1+esm2",
"9.0.58-1ubuntu0.1+esm3",
"9.0.58-1ubuntu0.1+esm4",
"9.0.58-1ubuntu0.2",
"9.0.58-1ubuntu0.2+esm1",
"9.0.58-1ubuntu0.2+esm2",
"9.0.58-1ubuntu0.2+esm3"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libtomcat10-embed-java",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "libtomcat10-java",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "tomcat10",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "tomcat10-admin",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "tomcat10-common",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "tomcat10-docs",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "tomcat10-examples",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
},
{
"binary_name": "tomcat10-user",
"binary_version": "10.1.16-1ubuntu0.1~esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "tomcat10",
"purl": "pkg:deb/ubuntu/tomcat10@10.1.16-1ubuntu0.1~esm4?arch=source\u0026distro=esm-apps/noble"
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{
"events": [
{
"introduced": "0"
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{
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],
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],
"versions": [
"10.1.10-1",
"10.1.14-1",
"10.1.15-1",
"10.1.16-1",
"10.1.16-1ubuntu0.1~esm1",
"10.1.16-1ubuntu0.1~esm2",
"10.1.16-1ubuntu0.1~esm3"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libtomcat9-java",
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}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "tomcat9",
"purl": "pkg:deb/ubuntu/tomcat9@9.0.70-2ubuntu0.1+esm3?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
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{
"fixed": "9.0.70-2ubuntu0.1+esm3"
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],
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],
"versions": [
"9.0.70-1ubuntu1",
"9.0.70-2",
"9.0.70-2ubuntu0.1",
"9.0.70-2ubuntu0.1+esm1",
"9.0.70-2ubuntu0.1+esm2"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtomcat10-embed-java",
"binary_version": "10.1.40-1ubuntu1.25.10.1"
},
{
"binary_name": "libtomcat10-java",
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{
"binary_name": "tomcat10",
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{
"binary_name": "tomcat10-admin",
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{
"binary_name": "tomcat10-common",
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{
"binary_name": "tomcat10-docs",
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{
"binary_name": "tomcat10-examples",
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{
"binary_name": "tomcat10-user",
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]
},
"package": {
"ecosystem": "Ubuntu:25.10",
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"versions": [
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},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtomcat11-embed-java",
"binary_version": "11.0.6-1"
},
{
"binary_name": "libtomcat11-java",
"binary_version": "11.0.6-1"
},
{
"binary_name": "tomcat11",
"binary_version": "11.0.6-1"
},
{
"binary_name": "tomcat11-admin",
"binary_version": "11.0.6-1"
},
{
"binary_name": "tomcat11-common",
"binary_version": "11.0.6-1"
},
{
"binary_name": "tomcat11-docs",
"binary_version": "11.0.6-1"
},
{
"binary_name": "tomcat11-examples",
"binary_version": "11.0.6-1"
},
{
"binary_name": "tomcat11-user",
"binary_version": "11.0.6-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "tomcat11",
"purl": "pkg:deb/ubuntu/tomcat11@11.0.6-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"11.0.6-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtomcat9-java",
"binary_version": "9.0.95-1ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "tomcat9",
"purl": "pkg:deb/ubuntu/tomcat9@9.0.95-1ubuntu1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.95-1ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.0.70-2ubuntu1.1",
"9.0.70-2ubuntu2",
"9.0.70-2ubuntu3",
"9.0.95-1ubuntu1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtomcat10-embed-java",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "libtomcat10-java",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "tomcat10",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "tomcat10-admin",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "tomcat10-common",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "tomcat10-docs",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "tomcat10-examples",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
},
{
"binary_name": "tomcat10-user",
"binary_version": "10.1.40-1ubuntu1.26.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tomcat10",
"purl": "pkg:deb/ubuntu/tomcat10@10.1.40-1ubuntu1.26.04.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.1.40-1ubuntu1.26.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"10.1.40-1ubuntu1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtomcat9-java",
"binary_version": "9.0.115-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tomcat9",
"purl": "pkg:deb/ubuntu/tomcat9@9.0.115-1ubuntu0.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.115-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.0.95-1ubuntu1",
"9.0.111-1",
"9.0.115-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtomcat11-embed-java",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "libtomcat11-java",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-admin",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-common",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-docs",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-examples",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-user",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tomcat11",
"purl": "pkg:deb/ubuntu/tomcat11@11.0.22-2ubuntu2~26.04.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"11.0.6-1",
"11.0.11-1",
"11.0.15-1",
"11.0.18-1",
"11.0.18-1ubuntu0.1~esm1",
"11.0.22-2ubuntu2~26.04.1"
]
}
],
"aliases": [],
"details": "DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.",
"id": "UBUNTU-CVE-2026-43512",
"modified": "2026-07-09T19:35:23Z",
"published": "2026-05-12T16:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-43512"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-43512"
},
{
"type": "REPORT",
"url": "https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8383-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8417-1"
}
],
"related": [
"USN-8383-1",
"USN-8417-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-43512"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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