CVE-2026-49017

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-49017
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49017.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49017
Aliases
Downstream
Published
2026-05-27T01:57:58.831Z
Modified
2026-07-15T01:48:52.024670206Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49017.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / opendev.org/openstack/swift

Affected ranges

Type
GIT
Repo
https://opendev.org/openstack/swift
Events
Introduced
82cb5a5d78b91c6af258cd8f06d30f69be90fa18
Fixed
bbd9c5e012d9f4821d67b9dfd538180de63e733b
Introduced
555026d200337b39c97eb9dafd26901ff40c7a1d
Fixed
f701907958c791f10ebb775690b9d21d39d92ae8
Introduced
9ae4dd3321a6f3e410c8221efd27814a1dfd2ece
Fixed
980b5b6987fa8d4ea5cdfa8256b00430d8bfc2d1
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2.36.0"
        },
        {
            "fixed": "2.36.2"
        },
        {
            "introduced": "2.37.0"
        },
        {
            "fixed": "2.37.2"
        },
        {
            "introduced": "2.35.1"
        },
        {
            "fixed": "2.35.3"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2.*
2.35.1
2.35.2
2.36.0
2.36.1
2.37.0
2.37.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49017.json"