RHSA-2026:23992

Vulnerability from csaf_redhat - Published: 2026-06-07 00:53 - Updated: 2026-08-03 15:47
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: python-attrs: * python3-attrs-26.1.0-3.hum1 (noarch) * python-attrs-26.1.0-3.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-49476

A flaw was found in soupsieve, a CSS selector library used with Beautiful Soup 4. This vulnerability allows a remote attacker to cause a denial of service (DoS) by supplying a specially crafted CSS selector string. The parser allocates unbounded memory when compiling large, comma-separated selector lists, leading to excessive memory consumption and system instability.

5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:python-attrs-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:python-attrs-main@src —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-49477

A flaw was found in soupsieve, a CSS selector library. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by supplying specially crafted, untrusted CSS selector strings. The flaw occurs due to a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value, leading to CPU exhaustion.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1333 - Inefficient Regular Expression Complexity
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:python-attrs-main@noarch —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python-attrs-main@src —
Vendor Fix fix
Threats
Impact Important
References
To clipboard 

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          "text": "A flaw was found in soupsieve, a CSS selector library used with Beautiful Soup 4. This vulnerability allows a remote attacker to cause a denial of service (DoS) by supplying a specially crafted CSS selector string. The parser allocates unbounded memory when compiling large, comma-separated selector lists, leading to excessive memory consumption and system instability.",
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          "text": "python-soupsieve: Soupsieve: Denial of Service via crafted CSS selector string",
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          "title": "Statement"
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            "userInteraction": "NONE",
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        }
      ],
      "title": "soupsieve: Soupsieve: Denial of Service via crafted CSS selector strings"
    }
  ]
}



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