CVE-2026-56207 json
Apache Impala: SAML authentication bypass via forged bearer token
published 2026-09-09 2 mo ago modified 2026-09-10 59 d ago also EUVD-2026-74797
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
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.
Patch / fix
- apache impala 4.5.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 59 d ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Apache Software Foundation Apache Impala
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
lists.apache.org
/thread/20cov78py0zqzx7dyq39ktythkwn91zs
vendor-advisory, mailing-list
-
openwall.com
/lists/oss-security/2026/09/08/22
mailing-list, third-party-advisory
Sources
- CVE List CVE-2026-56207
- NVD CVE-2026-56207
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