pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-835"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113794.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "6.20.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "37e1cd681744bac38b159f7e1c614eee8d639c58"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "6.20.0",
"range": [
{
"fixed": "0309ab701a192fbd3228701a44dd009765a1629b"
}
],
"source": "REFERENCES_TAG"
}
]
}