USN-8790-1 (UBUNTU-CVE-2025-59375)
Vulnerability from osv_ubuntu – Published: 2026-09-21 13:50 – Updated: 2026-09-21 13:50 – Source website
VLAI
Summary
expat vulnerabilities
Details
It was discovered that Expat could be made to allocate large amounts of memory when parsing a small crafted document. An attacker could possibly use this issue to cause Expat to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 24.04 LTS. (CVE-2025-59375)
It was discovered that Expat incorrectly handled empty external parameter entity content. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. (CVE-2026-32776)
It was discovered that Expat incorrectly handled certain DTD content. An attacker could possibly use this issue to cause Expat to enter an infinite loop, resulting in a denial of service. (CVE-2026-32777)
It was discovered that Expat incorrectly handled memory when retrying after an earlier out-of-memory condition. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. (CVE-2026-32778)
It was discovered that Expat performed attribute name collision checks inefficiently. An attacker could possibly use this issue to cause Expat to consume resources when processing a moderately sized crafted XML document, resulting in a denial of service. This issue was only addressed in Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-45186)
It was discovered that Expat used insufficient entropy, allowing hash flooding through a crafted XML document. An attacker could possibly use this issue to cause Expat to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 14.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-41080)
It was discovered that Expat did not track handler call depth for certain functions called from within handlers, leading to a use-after-free. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-50219, CVE-2026-56412)
It was discovered that Expat incorrectly handled certain values, leading to integer overflows. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. (CVE-2026-56403, CVE-2026-56404, CVE-2026-56405)
It was discovered that Expat incorrectly handled certain values, leading to an integer overflow. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-56408)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-32776",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32777",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32778",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-41080",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-50219",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56403",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56404",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56405",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56412",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "expat",
"binary_version": "2.1.0-4ubuntu1.4+esm12"
},
{
"binary_name": "lib64expat1",
"binary_version": "2.1.0-4ubuntu1.4+esm12"
},
{
"binary_name": "libexpat1",
"binary_version": "2.1.0-4ubuntu1.4+esm12"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "expat",
"purl": "pkg:deb/ubuntu/expat@2.1.0-4ubuntu1.4+esm12?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.0-4ubuntu1.4+esm12"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.0-4",
"2.1.0-4ubuntu1",
"2.1.0-4ubuntu1.1",
"2.1.0-4ubuntu1.2",
"2.1.0-4ubuntu1.3",
"2.1.0-4ubuntu1.4",
"2.1.0-4ubuntu1.4+esm1",
"2.1.0-4ubuntu1.4+esm2",
"2.1.0-4ubuntu1.4+esm4",
"2.1.0-4ubuntu1.4+esm6",
"2.1.0-4ubuntu1.4+esm7",
"2.1.0-4ubuntu1.4+esm8",
"2.1.0-4ubuntu1.4+esm9",
"2.1.0-4ubuntu1.4+esm10",
"2.1.0-4ubuntu1.4+esm11"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-32776",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32777",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32778",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-50219",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56403",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56404",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56405",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56412",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "expat",
"binary_version": "2.1.0-7ubuntu0.16.04.5+esm13"
},
{
"binary_name": "lib64expat1",
"binary_version": "2.1.0-7ubuntu0.16.04.5+esm13"
},
{
"binary_name": "libexpat1",
"binary_version": "2.1.0-7ubuntu0.16.04.5+esm13"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "expat",
"purl": "pkg:deb/ubuntu/expat@2.1.0-7ubuntu0.16.04.5+esm13?arch=source\u0026distro=esm-infra-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.0-7ubuntu0.16.04.5+esm13"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.0-7",
"2.1.0-7ubuntu0.16.04.1",
"2.1.0-7ubuntu0.16.04.2",
"2.1.0-7ubuntu0.16.04.3",
"2.1.0-7ubuntu0.16.04.4",
"2.1.0-7ubuntu0.16.04.5",
"2.1.0-7ubuntu0.16.04.5+esm2",
"2.1.0-7ubuntu0.16.04.5+esm5",
"2.1.0-7ubuntu0.16.04.5+esm6",
"2.1.0-7ubuntu0.16.04.5+esm7",
"2.1.0-7ubuntu0.16.04.5+esm8",
"2.1.0-7ubuntu0.16.04.5+esm9",
"2.1.0-7ubuntu0.16.04.5+esm10",
"2.1.0-7ubuntu0.16.04.5+esm11",
"2.1.0-7ubuntu0.16.04.5+esm12"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-32776",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32777",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32778",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-50219",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56403",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56404",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56405",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56408",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56412",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "expat",
"binary_version": "2.2.5-3ubuntu0.9+esm4"
},
{
"binary_name": "libexpat1",
"binary_version": "2.2.5-3ubuntu0.9+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "expat",
"purl": "pkg:deb/ubuntu/expat@2.2.5-3ubuntu0.9+esm4?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.5-3ubuntu0.9+esm4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.2.3-1",
"2.2.3-2",
"2.2.5-0ubuntu2",
"2.2.5-3",
"2.2.5-3ubuntu0.1",
"2.2.5-3ubuntu0.2",
"2.2.5-3ubuntu0.4",
"2.2.5-3ubuntu0.7",
"2.2.5-3ubuntu0.8",
"2.2.5-3ubuntu0.9",
"2.2.5-3ubuntu0.9+esm1",
"2.2.5-3ubuntu0.9+esm2",
"2.2.5-3ubuntu0.9+esm3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-32776",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32777",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-32778",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-50219",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-56403",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
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],
"aliases": [],
"details": "It was discovered that Expat could be made to allocate large amounts of\nmemory when parsing a small crafted document. An attacker could possibly\nuse this issue to cause Expat to consume resources, leading to a denial of\nservice. This issue was only addressed in Ubuntu 24.04 LTS.\n(CVE-2025-59375)\n\nIt was discovered that Expat incorrectly handled empty external parameter\nentity content. An attacker could possibly use this issue to cause Expat to\ncrash, resulting in a denial of service. (CVE-2026-32776)\n\nIt was discovered that Expat incorrectly handled certain DTD content. An\nattacker could possibly use this issue to cause Expat to enter an infinite\nloop, resulting in a denial of service. (CVE-2026-32777)\n\nIt was discovered that Expat incorrectly handled memory when retrying after\nan earlier out-of-memory condition. An attacker could possibly use this\nissue to cause Expat to crash, resulting in a denial of service.\n(CVE-2026-32778)\n\nIt was discovered that Expat performed attribute name collision checks\ninefficiently. An attacker could possibly use this issue to cause Expat to\nconsume resources when processing a moderately sized crafted XML document,\nresulting in a denial of service. This issue was only addressed in Ubuntu\n24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-45186)\n\nIt was discovered that Expat used insufficient entropy, allowing hash\nflooding through a crafted XML document. An attacker could possibly use\nthis issue to cause Expat to consume resources, leading to a denial of\nservice. This issue was only addressed in Ubuntu 14.04 LTS, Ubuntu 24.04\nLTS, and Ubuntu 26.04 LTS. (CVE-2026-41080)\n\nIt was discovered that Expat did not track handler call depth for certain\nfunctions called from within handlers, leading to a use-after-free. An\nattacker could possibly use this issue to cause Expat to crash, resulting\nin a denial of service, or possibly execute arbitrary code.\n(CVE-2026-50219, CVE-2026-56412)\n\nIt was discovered that Expat incorrectly handled certain values, leading to\ninteger overflows. An attacker could possibly use this issue to cause Expat\nto crash, resulting in a denial of service. (CVE-2026-56403,\nCVE-2026-56404, CVE-2026-56405)\n\nIt was discovered that Expat incorrectly handled certain values, leading to\nan integer overflow. An attacker could possibly use this issue to cause\nExpat to crash, resulting in a denial of service. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and\nUbuntu 26.04 LTS. (CVE-2026-56408)",
"id": "USN-8790-1",
"modified": "2026-09-21T13:50:42Z",
"published": "2026-09-21T13:50:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8790-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-59375"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-32776"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-32777"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-32778"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-41080"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-45186"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-50219"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-56403"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-56404"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-56405"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-56408"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-56412"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "expat vulnerabilities",
"upstream": [
"UBUNTU-CVE-2025-59375",
"UBUNTU-CVE-2026-32776",
"UBUNTU-CVE-2026-32777",
"UBUNTU-CVE-2026-32778",
"UBUNTU-CVE-2026-41080",
"UBUNTU-CVE-2026-45186",
"UBUNTU-CVE-2026-50219",
"UBUNTU-CVE-2026-56403",
"UBUNTU-CVE-2026-56404",
"UBUNTU-CVE-2026-56405",
"UBUNTU-CVE-2026-56408",
"UBUNTU-CVE-2026-56412"
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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