VDB

CVE-2026-49476

CVE-2026-49476 PUBLISHED CVSS 7.5 HIGH

Reported by GitHub_M · Published July 14, 2026

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.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
facelessusersoupsieve< 2.8.4
facelessusersoupsieve< 2.8.4, < 2.8.4, < 2.8.4
wolfidatadog-agent-7.730, 0, 0
wolfidatadog-agent-7.760, 0, 0
chainguarddatadog-agent-fips-7.780, 0, 0
chainguarddatadog-agent-7.760, 0, 0
chainguarddatadog-agent-fips-7.710, 0, 0
chainguarddatadog-agent-fips-7.760, 0, 0
wolfidatadog-agent-7.770, 0, 0
chainguarddatadog-agent-fips-7.740, 0, 0
chainguardairflow-20, 0, 0
wolfidatadog-agent-7.740, 0, 0
wolfidatadog-agent-7.720, 0, 0
chainguarddatadog-agent-fips-7.790, 0, 0
chainguarddatadog-agent-7.740, 0, 0
PyPIsoupsieve0
wolfiopen-webui0, 0, 0
chainguarddatadog-agent-fips-7.730, 0, 0
wolfikubeflow-pipelines-visualization-server0, 0, 0
chainguarddatadog-agent-fips-7.720, 0, 0

…and 11 more

Timeline

  • Jul 9, 2026 CVE Published
  • Jul 15, 2026 Security Advisory
  • Aug 7, 2026 EPSS Score
  • Aug 24, 2026 EPSS Score
  • Aug 26, 2026 EPSS Score
  • Aug 30, 2026 EPSS Score
  • Sep 3, 2026 EPSS Score
  • Sep 6, 2026 EPSS Score
  • Sep 9, 2026 EPSS Score
  • Sep 12, 2026 EPSS Score
  • Sep 16, 2026 EPSS Score
  • Sep 18, 2026 EPSS Score

References

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