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CVE-2026-49989— CrateDB's Blob HTTP handler bypasses authorization

Quick assessment

Affected
crate crate
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CrateDB是CrateDB公司开源的一个分布式且可扩展的 SQL 数据库。 CrateDB 6.2.8之前版本和6.3.0至6.3.2之前版本存在授权问题漏洞，该漏洞源于通过blob HTTP API访问时未正确验证用户权限，导致任何已认证用户可以读取或删除任意blob，并可在任意blob表中添加新blob。

CVSS 7.1 · High EPSS 0.47% · P40

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 2

VendorProduct Version RangeStatus
crate crate < 6.2.8 affected
>= 6.3.0, < 6.3.2 affected
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I. Basic Information for CVE-2026-49989

Vulnerability Information
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Vulnerability Title
CrateDB's Blob HTTP handler bypasses authorization
Source: CVE Program / CVE List V5
Vulnerability Description
CrateDB is a distributed SQL database. Prior to versions 6.2.8 and 6.3.2, any authenticated user can read or delete any blob whose SHA-1 digest they know, and can plant new blobs unconditionally, in any blob table, regardless of `GRANT`s. CrateDB has two ways to access blob storage: SQL (`SELECT ... FROM blob.<table>` and friends) and the blob HTTP API (`GET|PUT|DELETE /_blobs/{table}/{digest}`). The SQL path goes through `AccessControl`, which is what enforces privilege grants; that's why `SELECT digest FROM blob.secret_blobs` fails for a user who has no grants on the table. The HTTP path authenticates the request but never asks `AccessControl` whether the authenticated user is allowed to touch the table. So a user with no grants gets `MissingPrivilegeException` from SQL and `200 OK` plus the blob bytes from `GET /_blobs/secret_blobs/<digest>`. Deployments that don't use `BLOB TABLE` are unaffected. Authentication itself still works; the bug is strictly that being authenticated as anyone is treated as sufficient for any blob op. Versions 6.2.8 and 6.3.2 fix the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
CrateDB 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CrateDB是CrateDB公司开源的一个分布式且可扩展的 SQL 数据库。 CrateDB 6.2.8之前版本和6.3.0至6.3.2之前版本存在授权问题漏洞，该漏洞源于通过blob HTTP API访问时未正确验证用户权限，导致任何已认证用户可以读取或删除任意blob，并可在任意blob表中添加新blob。
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
crate crate < 6.2.8 -

II. Public POCs for CVE-2026-49989

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9477 chars
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III. Intelligence Information for CVE-2026-49989

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Vendor Advisories for CVE-2026-49989 (1)

IV. Related Vulnerabilities

Same product: crate
Same vendor: crate
Same weakness: CWE-863