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CVE-2026-45538

🗓️ 04 Aug 2026 20:47:10Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 13 Views

OpenSIPS prior to 4.0.0 is vulnerable to a stack buffer overflow in sip_to_json() when processing a SIP header name longer than 255 bytes. The function copies header names into a fixed 255-byte stack buffer without bounds checking, even though hea...

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-45538
4 Aug 202621:16
circl
cvelist
Cvelist
CVE-2026-45538 OpenSIPS: Stack Buffer Overflow in sip_to_json() Header Name Copy
4 Aug 202620:47
cvelist
euvd
EUVD
EUVD-2026-52919
4 Aug 202620:47
euvd
nvd
NVD
CVE-2026-45538
4 Aug 202621:16
nvd
redhatcve
RedhatCVE
CVE-2026-45538
4 Aug 202622:09
redhatcve
Vulners
Node
opensipsopensipsRange4.0.0
[
  {
    "vendor": "OpenSIPS",
    "product": "opensips",
    "versions": [
      {
        "version": "<= 4.0.0",
        "status": "affected"
      }
    ]
  }
]

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04 Aug 2026 21:16Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.19.8
EPSS0.00154
13