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Python Liquid: Infinite loop when parsing malformed `{% case %}` tags

🗓️ 19 Jun 2026 20:46:34Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 5 Views

Malformed case tags cause an infinite loop during parsing, risking denial of service; fixed in version 2.2.1 by correcting the EOF token.

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Detection
Refs
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Family
ATTACKERKB
CVE-2026-55865
9 Jul 202620:34
attackerkb
Chainguard
CVE-2026-55865 vulnerabilities
23 Jun 202608:17
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CVE
CVE-2026-55865
9 Jul 202620:34
cve
Cvelist
CVE-2026-55865 Python Liquid: Infinite loop when parsing malformed `{% case %}` tags
9 Jul 202620:34
cvelist
EUVD
EUVD-2026-42693
9 Jul 202620:34
euvd
NVD
CVE-2026-55865
9 Jul 202621:16
nvd
OSV
CGA-W4G9-P7GV-G4VM
21 Jun 202617:18
osv
OSV
ECHO-3A95-2E3A-8C10
1 Jul 202613:02
osv
OSV
GHSA-VQ2F-VCC9-J8MV Python Liquid: Infinite loop when parsing malformed `{% case %}` tags
19 Jun 202620:46
osv
Positive Technologies
PT-2026-51120
19 Jun 202600:00
ptsecurity
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python-liquidRange<2.2.1pip

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19 Jun 2026 20:46Current
5.8Medium risk
Vulners AI Score5.8
CVSS 47.1
EPSS0.00451
5