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Soup Sieve: Regular Expression Denial of Service (ReDoS) via Selector Parser

🗓️ 09 Jul 2026 13:37:46Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 13 Views

Soup Sieve CSS parser regex backtracks on unterminated quotes, enabling ReDoS.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
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CVE-2026-49477
14 Jul 202620:51
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10 Jul 202620:21
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9 Jul 202614:35
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14 Jul 202620:51
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CVE-2026-49477 Soup Sieve: Regular Expression Denial of Service (ReDoS) in soupsieve Selector Parser
14 Jul 202620:51
cvelist
debiancve
Debian CVE
CVE-2026-49477
14 Jul 202620:51
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euvd
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EUVD-2026-44538
14 Jul 202620:51
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CVE-2026-49477
14 Jul 202621:17
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nessus
Tenable Nessus
openSUSE 16 Security Update : python-soupsieve (openSUSE-SU-2026:21342-1)
16 Jul 202600:00
nessus
nessus
Tenable Nessus
SUSE SLES16 Security Update : python-soupsieve (SUSE-SU-2026:22660-1)
17 Jul 202600:00
nessus
Rows per page
Vulners
Node
soupsieveRange2.8.3pip

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09 Jul 2026 13:37Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
EPSS0.00522
SSVC
13