cvedb.io
CVE-2026-49476
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-07-14T21:17:01.877 · Last modified 2026-07-14T21:17:01.877

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.