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CVE-2026-84378 HTTPX2: Quadratic SSE line buffering can cause CPU denial of service

🗓️ 02 Sep 2026 17:54:19Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 40 Views

HTTPX2 2.5.0-2.10.0 quadratic SSE line buffering enables CPU denial of service.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-84378
2 Sep 202619:40
circl
cve
CVE
CVE-2026-84378
2 Sep 202617:54
cve
debiancve
Debian CVE
CVE-2026-84378
2 Sep 202617:54
debiancve
euvd
EUVD
EUVD-2026-70242
8 Sep 202620:45
euvd
github
Github Security Blog
HTTPX2: Quadratic SSE line buffering can cause CPU denial of service
8 Sep 202620:45
github
nvd
NVD
CVE-2026-84378
2 Sep 202618:21
nvd
osv
OSV
DEBIAN-CVE-2026-84378
2 Sep 202618:21
osv
osv
OSV
GHSA-F2FP-RGF2-35CP HTTPX2: Quadratic SSE line buffering can cause CPU denial of service
8 Sep 202620:45
osv
osv
OSV
MINI-485Q-XQ5H-M8RC
9 Sep 202620:26
osv
osv
OSV
PYSEC-2026-3847 HTTPX2: Quadratic SSE line buffering can cause CPU denial of service
10 Sep 202609:45
osv
Rows per page
[
  {
    "vendor": "pydantic",
    "product": "httpx2",
    "versions": [
      {
        "version": ">= 2.5.0, < 2.10.0",
        "status": "affected"
      }
    ]
  }
]

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