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CVE-2026-53561— Apache Hive: Unauthenticated authentication bypass in HiveServer2 HTTP SAML bearer-token validation allows impersonation of any Hive user

Quick assessment

Affected
Apache Software Foundation Apache Hive
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Apache Hive 4.0.0 至 4.2.0（以及后续未发布的分支）中，当部署使用 HTTP 传输协议并启用 配置时，HiveServer2 的 SAML 承载令牌（Bearer Token）验证存在身份验证缺陷。该漏洞允许未经身份验证的远程网络攻击者，通过向 HTTP 端点发送伪造的 头，以任意 Hive 用户身份进行身份验证，并获取已认证的 HiveServer2 会话。建议用户升级到 4.2.1 版本，该版本已修复此问题。 无需任何权限或授权：攻击者无需 Hive 凭据、SAML 身份提供商（IdP

AI Predicted 9.1 Difficulty: Easy

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Hive 4.0.0≤ 4.2.0 affected
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I. Basic Information for CVE-2026-53561

Vulnerability Information
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Vulnerability Title
Apache Hive: Unauthenticated authentication bypass in HiveServer2 HTTP SAML bearer-token validation allows impersonation of any Hive user
Source: CVE Program / CVE List V5
Vulnerability Description
An improper authentication vulnerability in HiveServer2 SAML bearer-token validation in Apache Hive 4.0.0 through 4.2.0 (and later unreleased branches) on deployments using HTTP transport with hive.server2.authentication=SAML allows an unauthenticated network attacker to authenticate as an arbitrary Hive user and obtain an authenticated HiveServer2 session via a forged Authorization: Bearer token sent to the /cliservice HTTP endpoint. Users are recommended to upgrade to 4.2.1 version that includes the fix for this issue. Access / authorization required: No Hive credentials, SAML IdP login, or knowledge of the server signing secret is required. The attacker only needs network reachability to the HiveServer2 HTTP port (typically /cliservice), directly or through a reverse proxy such as Apache Knox that forwards unauthenticated requests to HS2. The instance must have SAML authentication enabled in HTTP mode. Deployments where Knox handles SSO and HiveServer2 uses LDAP/Kerberos (not native SAML mode) are not affected by this specific issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Hive 4.0.0 ~ 4.2.0 -

II. Public POCs for CVE-2026-53561

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III. Intelligence Information for CVE-2026-53561

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Patches & Fixes for CVE-2026-53561 (2)

Mailing List Discussions for CVE-2026-53561 (1)

Vendor Pages for CVE-2026-53561 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-25 · 14 CVEs total

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CVE-2026-65637 Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix in
CVE-2026-65183 Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets
CVE-2026-65182 Apache Tomcat: Bypass longest prefix security constraint
CVE-2026-49845 Apache Hive: SQL Injection vulnerability in HiveMetaStore partition-name direct-SQL paths
CVE-2026-55976 Apache Hive: SSRF vulnerability in Hive Avro Serde due to Insufficient input validation on
CVE-2026-49050 Apache DolphinScheduler: General user can mint admin access tokens via /access-tokens

IV. Related Vulnerabilities

Same product: Apache Hive
Same vendor: Apache Software Foundation
Same weakness: CWE-287

V. Comments for CVE-2026-53561

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