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
| Vendor | Product | Versions |
|---|---|---|
| facelessuser | soupsieve | < 2.8.4 |
| wolfi | datadog-agent-7.74 | 0, 0, 0 |
| wolfi | datadog-agent-7.79 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.78 | 0, 0, 0 |
| wolfi | datadog-agent-7.77 | 0, 0, 0 |
| chainguard | datadog-agent-7.79 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.79 | 0, 0, 0 |
| chainguard | datadog-agent-7.77 | 0, 0, 0 |
| wolfi | datadog-agent-7.76 | 0, 0, 0 |
| wolfi | datadog-agent-7.73 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.71 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.76 | 0, 0, 0 |
| wolfi | open-webui | 0, 0, 0 |
| chainguard | datadog-agent-7.76 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.72 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.73 | 0, 0, 0 |
| chainguard | open-webui | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.74 | 0, 0, 0 |
| chainguard | datadog-agent-7.72 | 0, 0, 0 |
| chainguard | datadog-agent-fips-7.77 | 0, 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