Medium
squirrel3 — security advisory
A security flaw has been discovered in Squirrel up to 3.2. Impacted is the function ReadObject of the file squirrel/sqobject.cpp of the component Cnut File Handler. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
- Products
- squirrel3
- Affected versions
- 3.1-4, 3.1-5, 3.1-8, 3.1-8.2, 3.1-8.3, 3.1-8.4, 3.1-8.5, 3.1-8build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-9541
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:34 UTC · Revision 1
Source evidence
A security flaw has been discovered in Squirrel up to 3.2. Impacted is the function ReadObject of the file squirrel/sqobject.cpp of the component Cnut File Handler. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
osv:UBUNTU-CVE-2026-9541
squirrel3
Fixed versions: Not specified
squirrel3
Fixed versions: Not specified
squirrel3
Fixed versions: Not specified
squirrel3
Fixed versions: Not specified
squirrel3
Fixed versions: Not specified
squirrel3
Fixed versions: Not specified
Complete source record
{
"id": "c3b1d5b74afb770748a72cb160efc41fa1a570602d248107da192391f38c7a83",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-9541",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-9541",
"summary": "A security flaw has been discovered in Squirrel up to 3.2. Impacted is the function ReadObject of the file squirrel/sqobject.cpp of the component Cnut File Handler. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.",
"evidence": "osv:UBUNTU-CVE-2026-9541",
"products": [
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"evidence": "/affected/0/package/name"
},
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{
"value": "3.1-4",
"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
}
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},
{
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{
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"evidence": "/affected/4/versions"
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{
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}
]
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],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-9541",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
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"events": [
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}
]
}
],
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"purl": "pkg:deb/ubuntu/squirrel3?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9541.json"
},
"ecosystem_specific": {
"binaries": [
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"versions": [
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"database_specific": {
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},
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},
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},
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],
"database_specific": {
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},
"ecosystem_specific": {
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}
],
"modified": "2026-10-17T13:01:19.381285983Z",
"provider": "osv",
"upstream": [
"CVE-2026-9541"
],
"references": [
"https://ubuntu.com/security/CVE-2026-9541",
"https://www.cve.org/CVERecord?id=CVE-2026-9541",
"https://github.com/albertodemichelis/squirrel/issues/327",
"https://github.com/biniamf/pocs/tree/main/squirrel-sqobject-readobject-neg-len-oob",
"https://vuldb.com/submit/814826",
"https://vuldb.com/vuln/365602",
"https://vuldb.com/vuln/365602/cti"
]
},
"related_cves": [
{
"value": "CVE-2026-9541",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361668,
"published_at": "2026-05-26T14:16:00+00:00"
}