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CVE-2026-34829

1 advisory.

RubyGems/rack CVE-2026-34829: high 7.5

Rack's multipart parsing without Content-Length header allows unbounded chunked file uploads

Action: Upgrade rack to 2.2.23 or later.

bundle update rack

Affected

introducedfixedlast affected
02.2.23-
3.0.0.beta13.1.21-
3.2.03.2.6-

Fixed versions

2.2.233.1.213.2.6

Sources

CVE-2026-34829 · published · modified · JSON