CVE-2026-5430

Katalog CVE

CVSS 10.0 · Critical KEV · sudah dieksploitasi EPSS 0,59%

Kerentanan Improper Verification of Cryptographic Signature pada wso2 api control plane, wso2 api manager +2 lainnya. Skor CVSS 3.1 10.0 (Critical) menurut CNA. Masuk katalog KEV CISA pada 24 September 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported algorithm, which is then incorrectly validated, leading to unauthorized access. Successful exploitation of this vulnerability may result in unauthorized access to the system, including the potential compromise of administrative accounts and full account takeover. The CVSS score is adjusted to 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) in single-tenant deployments, reflecting that the impact is contained within a single security authority boundary.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: Rekapitulasi Kerentanan yang Dieksploitasi Aktif (KEV CISA) Periode 15 Agustus sampai 30 September 2026 30 Sep 2026

Rincian

Terbit di NVD

6 Agustus 2026

Terakhir diubah

25 September 2026

Status NVD

Analyzed

CVSS 3.1

10.0 (Critical), sumber CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-347: Improper Verification of Cryptographic Signature

EPSS (30 hari)

0,59% peluang dieksploitasi; lebih tinggi dari 46,6% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

WSO2 Multiple Products Path Traversal Vulnerability

Masuk KEV

24 September 2026

Tenggat CISA

27 September 2026 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5328/ advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-5430 pemerintah AS