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CVE-2026-55766 guzzlehttp/psr7: CRLF Injection in HTTP Start-Line Serialization

🗓️ 23 Jun 2026 15:07:36Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

CRLF injection in HTTP start-line during PSR-7 serialization in guzzlehttp before 2.12.1.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-55766
23 Jun 202615:07
attackerkb
Chainguard
CVE-2026-55766 vulnerabilities
23 Jun 202608:17
cgr
CVE
CVE-2026-55766
23 Jun 202615:07
cve
Debian CVE
CVE-2026-55766
23 Jun 202615:07
debiancve
EUVD
EUVD-2026-38458
23 Jun 202615:07
euvd
Friends Of PHP
CRLF injection in HTTP start-line serialization
18 Jun 202609:49
friendsofphp
Github Security Blog
guzzlehttp/psr7: CRLF Injection in HTTP Start-Line Serialization
19 Jun 202614:35
github
NVD
CVE-2026-55766
23 Jun 202616:17
nvd
OSV
CGA-QW68-4G78-5CFX
22 Jun 202614:54
osv
OSV
DEBIAN-CVE-2026-55766
19 Jun 202607:48
osv
Rows per page
[
  {
    "vendor": "guzzle",
    "product": "psr7",
    "versions": [
      {
        "version": "< 2.12.1",
        "status": "affected"
      }
    ]
  }
]

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