CVE-2026-49476
7.5 · HIGHOverview
CVE-2026-49476 is a high-severity vulnerability affecting facelessuser soup_sieve. It was published on July 14, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from facelessuser. Update soup_sieve to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| facelessuser | soup_sieve | >= 0, < 2.8.4 | Affected |
References
Frequently Asked Questions
What is CVE-2026-49476?
CVE-2026-49476 is a high-severity vulnerability affecting facelessuser soup_sieve. It was published on July 14, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-49476?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-49476?
Check the references section for vendor advisories and patches from facelessuser. Update soup_sieve to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-49476?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-49476 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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