Medium
mupdf — security advisory
MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata fields. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to terminal output when running mutool info, enabling them to manipulate terminal display for social engineering attacks such as presenting fake prompts or spoofed commands.
- Products
- mupdf
- Affected versions
- 1.11+ds1-1.1, 1.11+ds1-2, 1.12.0+ds1-1, 1.12.0+ds1-1ubuntu0.1~esm1, 1.12.0+ds1-1ubuntu0.1~esm2, 1.15.0+ds1-1, 1.16.1+ds1-1ubuntu1, 1.16.1+ds1-1ubuntu1+esm1, 1.16.1+ds1-1ubuntu1+esm2, 1.17.0+ds1-2, 1.19.0+ds1-1, 1.19.0+ds1-1build1, 1.19.0+ds1-2, 1.19.0+ds1-2ubuntu0.1~esm1, 1.22.2+ds1-2, 1.22.2+ds1-2build1, 1.23.10+ds1-1, 1.23.10+ds1-1build1, 1.23.10+ds1-1build2, 1.23.10+ds1-1build3, 1.23.10+ds1-1ubuntu0.1~esm1, 1.23.6+ds1-1, 1.23.7+ds1-1, 1.25.1+ds1-5build2, 1.25.1+ds1-6, 1.25.1+ds1-7, 1.25.1+ds1-7build1, 1.25.1+ds1-7build2, 1.27.0+ds1-2ubuntu1, 1.27.0+ds1-3ubuntu1, 1.27.0+ds1-3ubuntu2, 1.27.0+ds1-3ubuntu3, 1.7-1, 1.7a-1, 1.7a-1ubuntu0.1~esm1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-40505
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:43 UTC · Revision 1
Source evidence
MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata fields. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to terminal output when running mutool info, enabling them to manipulate terminal display for social engineering attacks such as presenting fake prompts or spoofed commands.
osv:UBUNTU-CVE-2026-40505
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
Complete source record
{
"id": "c4d273f925d45d5a9e4b98d196f0d826284c36b5666ba1f18b8ceee945ac1b74",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-40505",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-40505",
"summary": "MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata fields. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to terminal output when running mutool info, enabling them to manipulate terminal display for social engineering attacks such as presenting fake prompts or spoofed commands.",
"evidence": "osv:UBUNTU-CVE-2026-40505",
"products": [
{
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"evidence": "/affected/0/package/name"
},
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{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
}
]
},
{
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
},
{
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"evidence": "/affected/1/versions"
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"affected_versions": [
{
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},
{
"value": "1.16.1+ds1-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
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"evidence": "/affected/2/versions"
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{
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{
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"evidence": "/affected/3/versions"
},
{
"value": "1.19.0+ds1-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "1.19.0+ds1-2",
"evidence": "/affected/3/versions"
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{
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"evidence": "/affected/3/versions"
}
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},
{
"name": {
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},
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"affected_versions": [
{
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"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
},
{
"value": "1.23.6+ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.23.7+ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.23.10+ds1-1",
"evidence": "/affected/4/versions"
},
{
"value": "1.23.10+ds1-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "1.23.10+ds1-1build2",
"evidence": "/affected/4/versions"
},
{
"value": "1.23.10+ds1-1build3",
"evidence": "/affected/4/versions"
},
{
"value": "1.23.10+ds1-1ubuntu0.1~esm1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "mupdf",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.25.1+ds1-5build2",
"evidence": "/affected/5/versions"
},
{
"value": "1.25.1+ds1-6",
"evidence": "/affected/5/versions"
},
{
"value": "1.25.1+ds1-7",
"evidence": "/affected/5/versions"
}
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},
{
"name": {
"value": "mupdf",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.27.0+ds1-3ubuntu2",
"evidence": "/affected/6/versions"
},
{
"value": "1.27.0+ds1-3ubuntu3",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "mupdf",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.25.1+ds1-7",
"evidence": "/affected/7/versions"
},
{
"value": "1.25.1+ds1-7build1",
"evidence": "/affected/7/versions"
},
{
"value": "1.25.1+ds1-7build2",
"evidence": "/affected/7/versions"
},
{
"value": "1.27.0+ds1-2ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "1.27.0+ds1-3ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "1.27.0+ds1-3ubuntu2",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-40505",
"aliases": [
"UBUNTU-CVE-2026-40505"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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],
"package": {
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"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1.7-1",
"1.7a-1",
"1.7a-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40505.json"
},
"ecosystem_specific": {
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{
"binary_name": "mupdf",
"binary_version": "1.7a-1ubuntu0.1~esm1"
},
{
"binary_name": "mupdf-tools",
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},
"versions": [
"1.11+ds1-1.1",
"1.11+ds1-2",
"1.12.0+ds1-1",
"1.12.0+ds1-1ubuntu0.1~esm1",
"1.12.0+ds1-1ubuntu0.1~esm2"
],
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},
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},
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}
]
}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/mupdf?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"1.15.0+ds1-1",
"1.16.1+ds1-1ubuntu1",
"1.16.1+ds1-1ubuntu1+esm1",
"1.16.1+ds1-1ubuntu1+esm2"
],
"database_specific": {
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},
"ecosystem_specific": {
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},
{
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"1.23.10+ds1-1build3",
"1.23.10+ds1-1ubuntu0.1~esm1"
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},
"ecosystem_specific": {
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{
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},
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},
"ecosystem_specific": {
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{
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{
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},
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},
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},
{
"binary_name": "mupdf",
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},
{
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},
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"1.25.1+ds1-7build2",
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"1.27.0+ds1-3ubuntu1",
"1.27.0+ds1-3ubuntu2"
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"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
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"binary_version": "1.27.0+ds1-3ubuntu2"
},
{
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},
{
"binary_name": "mupdf-tools",
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},
{
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}
}
],
"modified": "2026-10-17T12:58:53.488415895Z",
"provider": "osv",
"upstream": [
"CVE-2026-40505"
],
"references": [
"https://ubuntu.com/security/CVE-2026-40505",
"https://www.cve.org/CVERecord?id=CVE-2026-40505",
"https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb",
"https://bugs.ghostscript.com/show_bug.cgi?id=709108"
]
},
"related_cves": [
{
"value": "CVE-2026-40505",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 359138,
"published_at": "2026-04-16T02:16:00+00:00"
}