Detections
Analytics
SCA: security update for rack (GHSA-8vqr-qjwx-82mw)
high Tenable Cloud Security Plugin ID 439713
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6,
Rack::Multipart::Parser only wraps the request body in a BoundedIO when CONTENT_LENGTH is present. When a
multipart/form-data request is sent without a Content-Length header, such as with HTTP chunked transfer
encoding, multipart parsing continues until end-of-stream with no total size limit. For file parts, the
uploaded body is written directly to a temporary file on disk rather than being constrained by the
buffered in-memory upload limit. An unauthenticated attacker can therefore stream an arbitrarily large
multipart file upload and consume unbounded disk space. This results in a denial of service condition for
Rack applications that accept multipart form data. This issue has been patched in versions 2.2.23, 3.1.21,
and 3.2.6. (CVE-2026-34829)
Solution
Update the rack library and its related packages to version 2.2.23 or later.See Also
Plugin Details
Severity: High
ID: 439713
Version: Revision 1.4
Type: Local
Family: SCA Checks
Published: 4/3/2026
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.74
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-34829
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 4/2/2026
Vulnerability Publication Date: 4/2/2026
Reference Information
CVE: CVE-2026-34829