Low
logback — security advisory
Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.33 inclusive.
- Products
- logback
- Affected versions
- 1:1.1.3-2, 1:1.1.3-2ubuntu0.1~esm1, 1:1.1.9-4, 1:1.1.9-5, 1:1.2.10-1, 1:1.2.10-1ubuntu0.1~esm1, 1:1.2.11-3, 1:1.2.11-4, 1:1.2.11-5, 1:1.2.11-6, 1:1.2.11-6build1, 1:1.2.3-2, 1:1.2.3-2ubuntu1~18.04.1, 1:1.2.3-2ubuntu1~18.04.1+esm1, 1:1.2.3-5, 1:1.2.3-5ubuntu0.1~esm1, 1:1.2.3-6, 1:1.2.7-1, 1:1.2.8-1, 1:1.2.9-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-10532
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:54 UTC · Revision 1
Source evidence
Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.33 inclusive.
osv:UBUNTU-CVE-2026-10532
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
logback
Fixed versions: Not specified
Complete source record
{
"id": "66d91edef3f4b59906c249769b910c444ff54c963a1161dfbdbeec207113cd45",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-10532",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-10532",
"summary": "Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.33 inclusive.",
"evidence": "osv:UBUNTU-CVE-2026-10532",
"products": [
{
"name": {
"value": "logback",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
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{
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"evidence": "/affected/0/versions"
},
{
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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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{
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{
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"evidence": "/affected/3/versions"
},
{
"value": "1:1.2.10-1",
"evidence": "/affected/3/versions"
},
{
"value": "1:1.2.10-1ubuntu0.1~esm1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "logback",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "1:1.2.11-3",
"evidence": "/affected/4/versions"
},
{
"value": "1:1.2.11-4",
"evidence": "/affected/4/versions"
},
{
"value": "1:1.2.11-5",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "logback",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "1:1.2.11-6",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "logback",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.2.11-6build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "logback",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.2.11-6",
"evidence": "/affected/7/versions"
},
{
"value": "1:1.2.11-6build1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2026-10532",
"aliases": [
"UBUNTU-CVE-2026-10532"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/RE:M/U:Green"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
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"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1:1.1.3-2",
"1:1.1.3-2ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10532.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "liblogback-java",
"binary_version": "1:1.1.3-2ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
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}
],
"package": {
"name": "logback",
"purl": "pkg:deb/ubuntu/logback?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"1:1.1.9-4",
"1:1.1.9-5",
"1:1.2.3-2",
"1:1.2.3-2ubuntu1~18.04.1",
"1:1.2.3-2ubuntu1~18.04.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10532.json"
},
"ecosystem_specific": {
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"binary_version": "1:1.2.3-2ubuntu1~18.04.1+esm1"
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{
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],
"package": {
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"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"1:1.2.3-5",
"1:1.2.3-5ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-10532.json"
},
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"1:1.2.10-1ubuntu0.1~esm1"
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
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],
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},
{
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"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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}
],
"modified": "2026-10-17T12:59:47.639816307Z",
"provider": "osv",
"upstream": [
"CVE-2026-10532"
],
"references": [
"https://ubuntu.com/security/CVE-2026-10532",
"https://www.cve.org/CVERecord?id=CVE-2026-10532",
"https://logback.qos.ch/news.html#1.5.34"
]
},
"related_cves": [
{
"value": "CVE-2026-10532",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359778,
"published_at": "2026-06-01T13:16:00+00:00"
}