October 22, 2026

CVE Watchtower

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CVE-2026-56207NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.8)
Published Date
Sep 9, 2026
Last Modified
Sep 10, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.47%Probability
Root Weakness (CWE)
CWE-347: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Apache Impala >= 4.0.0 and < 4.5.2
Patched Versions
  • Apache Impala 4.5.2
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
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External References