Medium
pypdf affected by possible infinite loop when reading DCT inline images without EOF marker
Type: advisorySources: OSV
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
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-62707
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 02:04 UTC · Revision 1
Source evidence
pypdf affected by possible infinite loop when reading DCT inline images without EOF marker
core-osv · Original sourcePublished 22 Oct 2025, 21:36 UTC
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:CVE-2025-62707
Complete source record
{
"id": "1c4faf65383161c9554b26a63856dc1f81a799ff0b95e6ac735da7e1ea3b7a4a",
"url": "https://osv.dev/vulnerability/CVE-2025-62707",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "pypdf affected by possible infinite loop when reading DCT inline images without EOF marker",
"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:CVE-2025-62707",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-62707",
"aliases": [
"CVE-2025-62707",
"GHSA-vr63-x8vc-m265",
"PYSEC-2026-1833"
],
"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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/py-pdf/pypdf",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "4a613f3fbe7af8ef65bbae740ceabe35310db4ee"
},
{
"fixed": "f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "6.1.3"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "4a613f3fbe7af8ef65bbae740ceabe35310db4ee"
}
],
"source": "REFERENCES_TAG",
"original_tag": "6.1.3"
}
]
}
}
],
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"1.27.5",
"1.27.4",
"1.27.3",
"1.27.2",
"1.27.1",
"1.27.0",
"v1.24",
"1.26.0",
"v1.25.1",
"v1.25",
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"v1.22",
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"v1.20",
"v1.19",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-62707.json"
}
}
],
"modified": "2026-10-28T02:30:53.002312717Z",
"provider": "osv",
"references": [
"https://github.com/py-pdf/pypdf/releases/tag/6.1.3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62707.json",
"https://github.com/py-pdf/pypdf/security/advisories/GHSA-vr63-x8vc-m265",
"https://nvd.nist.gov/vuln/detail/CVE-2025-62707",
"https://github.com/py-pdf/pypdf/commit/f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8",
"https://github.com/py-pdf/pypdf/pull/3501"
],
"provider_metadata": {
"cwe_ids": [
"CWE-834"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62707.json"
}
},
"related_cves": [
{
"value": "CVE-2025-62707",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 521610,
"published_at": "2025-10-22T21:36:32.754+00:00"
}