OESA-2026-3621

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3621
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3621.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3621
Upstream
Published
2026-09-05T15:03:14Z
Modified
2026-09-05T15:16:23.155936230Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
python-soupsieve security update
Details

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. It aims to provide selecting, matching, and filtering using modern CSS selectors. Soup Sieve currently provides selectors from the CSS level 1 specifications up through the latest CSS level 4 drafts and beyond (though some are not yet implemented).

Security Fix(es):

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve allocates unbounded memory when compiling large comma-separated selector lists, allowing an attacker who can supply a crafted selector string to soupsieve.compile() or Beautiful Soup .select() / .select_one() to allocate hundreds of megabytes of heap memory from a relatively small input and cause denial of service. This issue is fixed in version 2.8.4.(CVE-2026-49476)

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in soupsieve/cssparser.py, allowing an attacker who can supply untrusted CSS selector strings to soupsieve.compile() or Beautiful Soup .select() / .selectone() to cause CPU exhaustion and denial of service. This issue is fixed in version 2.8.4.(CVE-2026-49477)

Database specific 
{
    "severity": "High"
}
References

Affected packages

openEuler:24.03-LTS-SP3 / python-soupsieve

Package

Name
python-soupsieve
Purl
pkg:rpm/openEuler/python-soupsieve&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4-2.oe2403sp3

Ecosystem specific 

{
    "src": [
        "python-soupsieve-2.4-2.oe2403sp3.src.rpm"
    ],
    "noarch": [
        "python3-soupsieve-2.4-2.oe2403sp3.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3621.json"