VDB

CVE-2026-49477

CVE-2026-49477 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 contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in soupsieve/css_parser.py, allowing an attacker who can supply untrusted CSS selector strings to soupsieve.compile() or Beautiful Soup .select() / .select_one() to cause CPU exhaustion and 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
wolfidatadog-agent-7.740, 0, 0
wolfidatadog-agent-7.790, 0, 0
chainguarddatadog-agent-fips-7.780, 0, 0
wolfidatadog-agent-7.770, 0, 0
chainguarddatadog-agent-7.790, 0, 0
chainguarddatadog-agent-fips-7.790, 0, 0
chainguarddatadog-agent-7.770, 0, 0
wolfidatadog-agent-7.760, 0, 0
wolfidatadog-agent-7.730, 0, 0
chainguarddatadog-agent-fips-7.710, 0, 0
chainguarddatadog-agent-fips-7.760, 0, 0
wolfiopen-webui0, 0, 0
chainguarddatadog-agent-7.760, 0, 0
chainguarddatadog-agent-fips-7.720, 0, 0
chainguarddatadog-agent-fips-7.730, 0, 0
chainguardopen-webui0, 0, 0
chainguarddatadog-agent-fips-7.740, 0, 0
chainguarddatadog-agent-7.720, 0, 0
chainguarddatadog-agent-fips-7.770, 0, 0

…and 9 more

Timeline

  • Jul 9, 2026 CVE Published
  • Jul 15, 2026 Security Advisory
  • Jul 28, 2026 CVE Updated
  • Aug 7, 2026 EPSS Score
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