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CVE-2026-64640— Apache Polaris: register endpoint reads attacker-controlled storage location before allowed-locations validation

Quick assessment

Affected
Apache Software Foundation Apache Polaris
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.

Apache Polaris是美国Apache基金会开源的一个数据管理与查询服务组件。 Apache Polaris 1.6.0及之前版本存在授权问题漏洞，该漏洞源于未一致验证表注册和视图注册期间提供的存储位置，可能导致信息泄露。

CVSS 5.3 · Medium EPSS 0.37% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Polaris ≤ 1.6.0 affected
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I. Basic Information for CVE-2026-64640

Vulnerability Information
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Vulnerability Title
Apache Polaris: register endpoint reads attacker-controlled storage location before allowed-locations validation
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Polaris did not consistently validate storage locations supplied during table and view registration. An authenticated principal with permission to register a table or view could, depending on the affected release and registration path, cause Polaris to use the catalog's storage credentials to read a caller-selected Iceberg metadata file before verifying that the file was within the catalog's allowed storage locations. If the catalog's underlying credentials could read an object outside that boundary, this could disclose limited information from the object. Polaris could also accept registration metadata located within an allowed location that contained references to storage locations outside the allowed boundary. This second condition did not itself cause Polaris to read the referenced external locations during registration. The demonstrated impact is limited to confidentiality. No unauthorized data modification or availability impact has been demonstrated. The server-side read requires a deployment using S3 credential vending and an object outside the allowed locations that the catalog's underlying storage credentials can read. Exploitation requires an authenticated principal with table- or view-registration privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/S:N/U:Clear
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Polaris 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Polaris是美国Apache基金会开源的一个数据管理与查询服务组件。 Apache Polaris 1.6.0及之前版本存在授权问题漏洞，该漏洞源于未一致验证表注册和视图注册期间提供的存储位置，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Polaris 0 ~ 1.6.0 -

II. Public POCs for CVE-2026-64640

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III. Intelligence Information for CVE-2026-64640

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Mailing List Discussions for CVE-2026-64640 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-06 · 18 CVEs total

CVE-2026-65583 Apache CXF: Self-issued ID token claims validation skipped
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CVE-2026-34191 Apache Portable Runtime Utility: SQL Injection in apr_dbd_oracle
CVE-2026-34501 Apache Portable Runtime Utility: Heap buffer overflow in APR redis client
CVE-2026-34502 Apache Portable Runtime Utility: Heap buffer overflow in APR memcached client
CVE-2026-57818 Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider
CVE-2026-61466 Apache CXF: OAuth2 Dynamic Client Registration Scope Self-Escalation
CVE-2026-63687 Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parameters
CVE-2026-54225 Apache CXF: Denial of Service attack via large attachments
CVE-2026-68079 Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replay
CVE-2026-68481 Apache CXF: Revocation bypass in DefaultEncryptingOAuthDataProvider
CVE-2026-65432 Apache CXF: XXE via WSDL/XSD import parsing
CVE-2026-57817 Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow
CVE-2026-66909 Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
CVE-2026-64958 Apache CXF: Denial of service via message header attachments
CVE-2026-57819 Apache CXF: No default restriction on the amount of form parameters per message

IV. Related Vulnerabilities

Same product: Apache Polaris
Same vendor: Apache Software Foundation
Same weakness: CWE-863

V. Comments for CVE-2026-64640

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