MediumFix available
tesseract — security advisory
Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.
- Products
- tesseract
- Affected versions
- 3.02.02-1, 3.03.02-3, 3.03.02-3ubuntu0.1~esm1, 3.04.00-5ubuntu1, 3.04.01-2, 3.04.01-4, 3.04.01-4ubuntu0.1~esm1, 3.04.01-6, 3.04.01-6build1, 3.04.01-6build2, 4.00~git2188-cdc35338-4build1, 4.00~git2188-cdc35338-5, 4.00~git2207-766b7bd6-3.1, 4.00~git2219-40f43111-1.2, 4.00~git2288-10f4998a-2, 4.1.0-1, 4.1.0-2, 4.1.1-1, 4.1.1-2, 4.1.1-2.1, 4.1.1-2.1build1, 4.1.1-2build1, 4.1.1-2build2, 5.3.0-2build1, 5.3.3-1, 5.3.3-1build1, 5.3.4-1, 5.3.4-1build3, 5.3.4-1build4, 5.3.4-1build5, 5.5.0-1, 5.5.0-1.1, 5.5.0-1build1
- Fixed versions
- 4.00~git2288-10f4998a-2ubuntu0.1~esm1, 4.1.1-2.1ubuntu0.1~esm1, 4.1.1-2ubuntu0.1~esm1, 5.3.4-1ubuntu0.1~esm1, 5.5.0-1ubuntu0.1~esm1
- CVEs
- CVE-2026-73067
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:15 UTC · Revision 1
Source evidence
Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.
osv:UBUNTU-CVE-2026-73067
tesseract
Fixed versions: Not specified
tesseract
Fixed versions: Not specified
tesseract
Fixed versions: 4.00~git2288-10f4998a-2ubuntu0.1~esm1
tesseract
Fixed versions: 4.1.1-2ubuntu0.1~esm1
tesseract
Fixed versions: 4.1.1-2.1ubuntu0.1~esm1
tesseract
Fixed versions: 5.3.4-1ubuntu0.1~esm1
tesseract
Fixed versions: Not specified
tesseract
Fixed versions: 5.5.0-1ubuntu0.1~esm1
Complete source record
{
"id": "c456826b156fb1f6b33253c9d73338d91e9dcf7a350598fd195cc12c4a0ee502",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-73067",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-73067",
"summary": "Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.",
"evidence": "osv:UBUNTU-CVE-2026-73067",
"products": [
{
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"evidence": "/affected/0/versions"
},
{
"value": "3.03.02-3",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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},
{
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{
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{
"value": "3.04.01-2",
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{
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{
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{
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{
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{
"value": "4.00~git2219-40f43111-1.2",
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{
"value": "4.00~git2288-10f4998a-2",
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{
"name": {
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{
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{
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{
"value": "4.1.0-2",
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{
"value": "4.1.1-1",
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{
"value": "4.1.1-2",
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{
"value": "4.1.1-2build1",
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{
"value": "4.1.1-2build2",
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},
{
"name": {
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"evidence": "/affected/4/package/name"
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{
"value": "4.1.1-2.1ubuntu0.1~esm1",
"evidence": "/affected/4/ranges"
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],
"affected_versions": [
{
"value": "4.1.1-2.1",
"evidence": "/affected/4/versions"
},
{
"value": "4.1.1-2.1build1",
"evidence": "/affected/4/versions"
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},
{
"name": {
"value": "tesseract",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.3.4-1ubuntu0.1~esm1",
"evidence": "/affected/5/ranges"
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],
"affected_versions": [
{
"value": "5.3.0-2build1",
"evidence": "/affected/5/versions"
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{
"value": "5.3.3-1",
"evidence": "/affected/5/versions"
},
{
"value": "5.3.3-1build1",
"evidence": "/affected/5/versions"
},
{
"value": "5.3.4-1",
"evidence": "/affected/5/versions"
},
{
"value": "5.3.4-1build3",
"evidence": "/affected/5/versions"
},
{
"value": "5.3.4-1build4",
"evidence": "/affected/5/versions"
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{
"value": "5.3.4-1build5",
"evidence": "/affected/5/versions"
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{
"name": {
"value": "tesseract",
"evidence": "/affected/6/package/name"
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{
"value": "5.5.0-1build1",
"evidence": "/affected/6/versions"
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{
"value": "5.5.0-1.1",
"evidence": "/affected/6/versions"
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{
"name": {
"value": "tesseract",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.5.0-1ubuntu0.1~esm1",
"evidence": "/affected/7/ranges"
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],
"affected_versions": [
{
"value": "5.5.0-1",
"evidence": "/affected/7/versions"
},
{
"value": "5.5.0-1build1",
"evidence": "/affected/7/versions"
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"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-73067",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
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"affected": [
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"
},
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"binaries": [
{
"binary_name": "libtesseract3",
"binary_version": "3.03.02-3ubuntu0.1~esm1"
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{
"binary_name": "tesseract-ocr",
"binary_version": "3.03.02-3ubuntu0.1~esm1"
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"3.04.01-2",
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtesseract3",
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},
{
"binary_name": "tesseract-ocr",
"binary_version": "3.04.01-4ubuntu0.1~esm1"
},
{
"binary_name": "tesseract-ocr-all",
"binary_version": "3.04.01-4ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
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{
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{
"fixed": "4.00~git2288-10f4998a-2ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "tesseract",
"purl": "pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"3.04.01-6",
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"4.00~git2188-cdc35338-5",
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"binary_name": "tesseract-ocr",
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{
"binary_name": "tesseract-ocr-all",
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"package": {
"name": "tesseract",
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"versions": [
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"binary_name": "tesseract-ocr",
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"binary_name": "tesseract-ocr-all",
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],
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}
},
{
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{
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{
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{
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}
],
"package": {
"name": "tesseract",
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},
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],
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},
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{
"binary_name": "libtesseract4",
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{
"binary_name": "tesseract-ocr",
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{
"binary_name": "tesseract-ocr-all",
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],
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},
{
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{
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]
}
],
"package": {
"name": "tesseract",
"purl": "pkg:deb/ubuntu/tesseract?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"5.3.0-2build1",
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"5.3.4-1",
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtesseract5",
"binary_version": "5.3.4-1ubuntu0.1~esm1"
},
{
"binary_name": "tesseract-ocr",
"binary_version": "5.3.4-1ubuntu0.1~esm1"
},
{
"binary_name": "tesseract-ocr-all",
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}
],
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}
},
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{
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"
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{
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{
"binary_name": "tesseract-ocr",
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{
"binary_name": "tesseract-ocr-all",
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]
}
},
{
"ranges": [
{
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{
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],
"package": {
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73067.json"
},
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"binaries": [
{
"binary_name": "libtesseract5",
"binary_version": "5.5.0-1ubuntu0.1~esm1"
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{
"binary_name": "tesseract-ocr",
"binary_version": "5.5.0-1ubuntu0.1~esm1"
},
{
"binary_name": "tesseract-ocr-all",
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],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
}
],
"modified": "2026-10-17T13:00:55.499404190Z",
"provider": "osv",
"upstream": [
"CVE-2026-73067"
],
"references": [
"https://ubuntu.com/security/CVE-2026-73067",
"https://www.cve.org/CVERecord?id=CVE-2026-73067",
"https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-x3vq-7rr7-5x3h",
"https://github.com/tesseract-ocr/tesseract/pull/4581",
"https://github.com/tesseract-ocr/tesseract/commit/55287a94b8044c05ce3fd10f5aca6ebbd238e518",
"https://github.com/tesseract-ocr/tesseract/commit/82727cc11c34eaf1249af002d69f6bbae70993b9",
"https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3",
"https://ubuntu.com/security/notices/USN-8882-1"
]
},
"related_cves": [
{
"value": "CVE-2026-73067",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360858,
"published_at": "2026-08-11T15:17:00+00:00"
}