Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-835"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42310.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0"
},
{
"fixed": "12.2.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "3bf614e4b8615d0ce1d5039efaf6db447fe7c468"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "12.2.0",
"range": [
{
"fixed": "3c41c095064200a02672d89cc5ff629eaf4b0d4f"
}
],
"source": "REFERENCES_TAG"
}
]
}