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CVE-2026-77680

🗓️ 25 Aug 2026 20:36:45Reported by redhatType 
cve
 cve
🔗 web.nvd.nist.gov👁 41 Views🌐 WEB

Quadratic CPU DoS in Libsoup3 HTTP Range coalescing via repeated identical ranges.

Related
Affected
Refs
Paths
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup3",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10"
    ]
  }
]
ParameterPositionPathDescriptionCWE
Rangeheader/Algorithmic complexity flaw (CWE-407) in libsoup's HTTP Range header processing. Sending a large number of repeated, satisfiable ranges (e.g., bytes=0-0 repeated thousands of times) can cause O(N^2) CPU exhaustion, potentially blocking the server's event loop.CWE-407

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28 Aug 2026 21:17Current
6Medium risk
Vulners AI Score6
CVSS 3.15.3
EPSS0.00344
SSVC
41