High
ippsample — security advisory
PDFio before 1.6.5 contains a dangling pointer vulnerability in the dictionary string-formatting function that stores a pointer to a stack-local buffer in the document dictionary without copying the string value. In multi-threaded or pooled-request environments, attackers or concurrent users can trigger stack memory reuse across requests, causing cross-tenant document content corruption by silently overwriting one caller's dictionary string values with another caller's data.
- Products
- ippsample
- Affected versions
- 0.0+20180213-0ubuntu1, 0.0+20180213-0ubuntu2, 0.0+20180213-0ubuntu3, 0.0.0~git20220215.f365352-1, 0.0.0~git20220215.f365352-1build1, 0.0.0~git20220215.f365352-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-77220
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:18 UTC · Revision 1
Source evidence
PDFio before 1.6.5 contains a dangling pointer vulnerability in the dictionary string-formatting function that stores a pointer to a stack-local buffer in the document dictionary without copying the string value. In multi-threaded or pooled-request environments, attackers or concurrent users can trigger stack memory reuse across requests, causing cross-tenant document content corruption by silently overwriting one caller's dictionary string values with another caller's data.
osv:UBUNTU-CVE-2026-77220
ippsample
Fixed versions: Not specified
ippsample
Fixed versions: Not specified
ippsample
Fixed versions: Not specified
ippsample
Fixed versions: Not specified
ippsample
Fixed versions: Not specified
ippsample
Fixed versions: Not specified
Complete source record
{
"id": "7ec4acc32a8bae5ab035b207dfd5311daee05ed94041e311d4605b4b4d66961b",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-77220",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-77220",
"summary": "PDFio before 1.6.5 contains a dangling pointer vulnerability in the dictionary string-formatting function that stores a pointer to a stack-local buffer in the document dictionary without copying the string value. In multi-threaded or pooled-request environments, attackers or concurrent users can trigger stack memory reuse across requests, causing cross-tenant document content corruption by silently overwriting one caller's dictionary string values with another caller's data.",
"evidence": "osv:UBUNTU-CVE-2026-77220",
"products": [
{
"name": {
"value": "ippsample",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0+20180213-0ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
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"affected_versions": [
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{
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},
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"affected_versions": [
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{
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{
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"affected_versions": [
{
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"evidence": "/affected/5/versions"
},
{
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"evidence": "/affected/5/versions"
},
{
"value": "0.0.0~git20220215.f365352-1build1",
"evidence": "/affected/5/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-77220",
"aliases": [
"UBUNTU-CVE-2026-77220"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
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"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ippsample",
"purl": "pkg:deb/ubuntu/ippsample?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.0+20180213-0ubuntu1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
"binary_name": "ippsample",
"binary_version": "0.0+20180213-0ubuntu1"
}
]
}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/ippsample?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
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],
"database_specific": {
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{
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"package": {
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"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
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"database_specific": {
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},
"ecosystem_specific": {
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{
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"binary_version": "0.0+20180213-0ubuntu1"
}
]
}
},
{
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"package": {
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
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"0.0+20180213-0ubuntu2",
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],
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},
"ecosystem_specific": {
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}
]
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},
{
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"package": {
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
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],
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},
"ecosystem_specific": {
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{
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"binary_version": "0.0.0~git20220215.f365352-2"
},
{
"binary_name": "ippsample-data",
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},
{
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"package": {
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"ecosystem": "Ubuntu:26.04:LTS"
},
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"0.0.0~git20220215.f365352-1",
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],
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},
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},
{
"binary_name": "ippsample-data",
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}
]
}
}
],
"modified": "2026-10-17T13:01:07.709884580Z",
"provider": "osv",
"upstream": [
"CVE-2026-77220"
],
"references": [
"https://ubuntu.com/security/CVE-2026-77220",
"https://www.cve.org/CVERecord?id=CVE-2026-77220"
]
},
"related_cves": [
{
"value": "CVE-2026-77220",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 361032,
"published_at": "2026-08-21T21:17:00+00:00"
}