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CVE-2026-49017

AI Predicted 8.1 Difficulty: Moderate EPSS 0.04% · P12

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProductVersion RangeStatus
OpenStackSwift2.36.0< 2.36.2affected
2.37.0< 2.37.2affected
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I. Basic Information for CVE-2026-49017

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
OpenStackSwift 2.36.0 ~ 2.36.2 -

II. Public POCs for CVE-2026-49017

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III. Intelligence Information for CVE-2026-49017

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Patches & Fixes for CVE-2026-49017 (2)

Other References for CVE-2026-49017 (1)

IV. Related Vulnerabilities

Same vendor: OpenStack
Same weakness: CWE-835

V. Comments for CVE-2026-49017

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