A heap-based buffer overflow vulnerability exists in the x3fthumbloader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
{
"unresolved_ranges": [
{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "Commit d20315b"
},
{
"last_affected": "Commit d20315b"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/20xxx/CVE-2026-20889.json",
"cna_assigner": "talos",
"cwe_ids": [
"CWE-190"
]
}