Medium
pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction
Type: advisorySources: OSV
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-54530
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 13:27 UTC · Revision 1
Source evidence
pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction
core-osv · Original sourcePublished 22 Jun 2026, 20:25 UTC
pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0.
osv:CVE-2026-54530
Complete source record
{
"id": "c513e361e37dab2323d9f2b9a70bf0a017a76bc18a32746d9df7386807044bc0",
"url": "https://osv.dev/vulnerability/CVE-2026-54530",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction",
"summary": "pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0.",
"evidence": "osv:CVE-2026-54530",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-54530",
"aliases": [
"CVE-2026-54530",
"GHSA-52x6-gq3r-vpf4",
"PYSEC-2026-3009"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
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"type": "GIT",
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{
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54530.json"
}
}
],
"modified": "2026-10-28T02:30:28.942373937Z",
"provider": "osv",
"references": [
"https://github.com/py-pdf/pypdf/releases/tag/6.13.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54530.json",
"https://github.com/py-pdf/pypdf/security/advisories/GHSA-52x6-gq3r-vpf4",
"https://nvd.nist.gov/vuln/detail/CVE-2026-54530",
"https://github.com/py-pdf/pypdf/pull/3830"
],
"provider_metadata": {
"cwe_ids": [
"CWE-835"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54530.json"
}
},
"related_cves": [
{
"value": "CVE-2026-54530",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495856,
"published_at": "2026-06-22T20:25:29.305+00:00"
}