Signature of Bearer token is not verified in last step of SAML2 authentication for Impala's hs2-http interface, allowing altering user name and acting as another user.
This issue affects Apache Impala: >=4.0.0.
Users are recommended to upgrade to version 4.5.2, which fixes this issue.
{
"cna_assigner": "apache",
"cwe_ids": [
"CWE-347"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56207.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.5.1"
}
],
"source": "AFFECTED_FIELD"
}
]
}