CVE-2026-34840

Katalog CVE

CVSS 8.1 · High EPSS 0,34%

Kerentanan Improper Verification of Cryptographic Signature pada hackerbay oneuptime. Skor CVSS 3.1 8.1 (High) menurut github.com.

Deskripsi (NVD)

OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.42, OneUptime's SAML SSO implementation (App/FeatureSet/Identity/Utils/SSO.ts) has decoupled signature verification and identity extraction. isSignatureValid() verifies the first <Signature> element in the XML DOM using xml-crypto, while getEmail() always reads from assertion[0] via xml2js. An attacker can prepend an unsigned assertion containing an arbitrary identity before a legitimately signed assertion, resulting in authentication bypass. This issue has been patched in version 10.0.42.

Rincian

Terbit di NVD

2 April 2026

Terakhir diubah

6 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

8.1 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-347: Improper Verification of Cryptographic Signature

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/OneUptime/oneuptime/security/advisories/GHSA-5w5c-766x-265g exploit · mitigasi · advisory vendor
• https://github.com/OneUptime/oneuptime/commit/2fd7ede52f60444710628d6c1b34dee2ef9e57d1 patch
• https://github.com/OneUptime/oneuptime/releases/tag/10.0.42 product · release notes