pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each content lookup, producing repeated work and long runtimes when an application accesses the embedded-file mapping. This issue is fixed in version 6.19.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-400",
"CWE-407"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102999.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "6.19.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "6b10556d13609a68f9ed18bb29fdd8bba88eb2c3"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "6.19.0",
"range": [
{
"fixed": "d62cb58d3988b291b0435eddfd118c4f8f6b6a46"
}
],
"source": "REFERENCES_TAG"
}
]
}