Inefficient Regular Expression Complexity Affecting satellite/iop-vmaas-rhel9 package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Social Trends
EPSS
0.72% (50th percentile)

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  • Snyk IDSNYK-RHEL7-SATELLITEIOPVMAASRHEL9-15669437
  • published16 Mar 2026
  • disclosed12 Mar 2026

Introduced: 12 Mar 2026

CVE-2026-28356  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 satellite/iop-vmaas-rhel9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream satellite/iop-vmaas-rhel9 package and not the satellite/iop-vmaas-rhel9 package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

multipart is a fast multipart/form-data parser for python. Prior to 1.2.2, 1.3.1 and 1.4.0-dev, the parse_options_header() function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking (ReDoS) when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service (DoS) attacks against web applications using this library to parse request headers or multipart/form-data streams. The issue is fixed in 1.2.2, 1.3.1 and 1.4.0-dev.

CVSS Base Scores

version 3.1