High
pypdf — security advisory
pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter. This has been fixed in pypdf version 6.1.3.
- Products
- pypdf
- Affected versions
- 3.17.4-1, 3.4.1-1, 4.0.0-1, 4.0.1-1, 4.0.2-1, 4.3.1-1, 5.4.0-1, 6.9.2-1, 6.9.2-2
- Fixed versions
- Not specified
- CVEs
- CVE-2025-62707
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:48 UTC · Revision 1
Source evidence
pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter. This has been fixed in pypdf version 6.1.3.
osv:UBUNTU-CVE-2025-62707
pypdf
Fixed versions: Not specified
pypdf
Fixed versions: Not specified
pypdf
Fixed versions: Not specified
pypdf
Fixed versions: Not specified
Complete source record
{
"id": "5e82a179606fa4b6fae9e1cf428317a3a346bcd19987275a1b01d88851261c54",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-62707",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-62707",
"summary": "pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter. This has been fixed in pypdf version 6.1.3.",
"evidence": "osv:UBUNTU-CVE-2025-62707",
"products": [
{
"name": {
"value": "pypdf",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.4.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.17.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.1-1",
"evidence": "/affected/0/versions"
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{
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}
]
},
{
"name": {
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},
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"affected_versions": [
{
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{
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"evidence": "/affected/1/versions"
}
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{
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{
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"evidence": "/affected/2/versions"
}
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},
{
"name": {
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"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.4.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "6.9.2-1",
"evidence": "/affected/3/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2025-62707",
"aliases": [
"UBUNTU-CVE-2025-62707"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
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],
"package": {
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"ecosystem": "Ubuntu:24.04:LTS"
},
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"3.17.4-1",
"4.0.0-1",
"4.0.1-1",
"4.0.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62707.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-pypdf",
"binary_version": "4.0.2-1"
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}
},
{
"ranges": [
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],
"package": {
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"ecosystem": "Ubuntu:25.10"
},
"versions": [
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"5.4.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62707.json"
},
"ecosystem_specific": {
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{
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
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"6.9.2-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62707.json"
},
"ecosystem_specific": {
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]
}
},
{
"ranges": [
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],
"package": {
"name": "pypdf",
"purl": "pkg:deb/ubuntu/pypdf?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"5.4.0-1",
"6.9.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62707.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-pypdf",
"binary_version": "6.9.2-1"
}
]
}
}
],
"modified": "2026-10-17T12:57:28.935442656Z",
"provider": "osv",
"upstream": [
"CVE-2025-62707"
],
"references": [
"https://ubuntu.com/security/CVE-2025-62707",
"https://www.cve.org/CVERecord?id=CVE-2025-62707",
"https://github.com/py-pdf/pypdf/security/advisories/GHSA-vr63-x8vc-m265",
"https://github.com/py-pdf/pypdf/pull/3501",
"https://github.com/py-pdf/pypdf/commit/f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8",
"https://github.com/py-pdf/pypdf/releases/tag/6.1.3"
]
},
"related_cves": [
{
"value": "CVE-2025-62707",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 357588,
"published_at": "2025-10-22T22:15:00+00:00"
}