CVE-2026-49017 | BDVDB-2026-335873 Detail

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.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-05-27Record published in the CVE List.
2. Version 22026-06-02Most recent update recorded in the CVE List.