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EUVD-2026-18533

🗓️ 02 Apr 2026 18:52:48Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu

Prior to 10.0.42, OneUptime single sign on could bypass authentication by prepending an unsigned assertion before a signed one; fixed in 10.0.42.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34840
2 Apr 202618:52
attackerkb
Circl
CVE-2026-34840
2 Apr 202621:35
circl
CNNVD
OneUptime 数据伪造问题漏洞
2 Apr 202600:00
cnnvd
CVE
CVE-2026-34840
2 Apr 202618:52
cve
Cvelist
CVE-2026-34840 OneUptime SSO: Multi-Assertion Identity Injection via Decoupled Signature Verification
2 Apr 202618:52
cvelist
NVD
CVE-2026-34840
2 Apr 202620:16
nvd
Positive Technologies
PT-2026-29882
2 Apr 202600:00
ptsecurity
RedhatCVE
CVE-2026-34840
3 Apr 202623:02
redhatcve
Vulnrichment
CVE-2026-34840 OneUptime SSO: Multi-Assertion Identity Injection via Decoupled Signature Verification
2 Apr 202618:52
vulnrichment
[
  {
    "enisaIdVendor": [
      {
        "id": "58b50a52-8a93-3bb2-9781-b4bce72ea9f4",
        "vendor": {
          "name": "OneUptime"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "16eaad91-66a5-31f2-ab37-4461eef0b3af",
        "product": {
          "name": "oneuptime"
        },
        "product_version": "< 10.0.42"
      }
    ]
  }
]

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02 Apr 2026 18:52Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.1
EPSS0.00039
SSVC
0