CVE-2025-34291

Katalog CVE

CVSS 8.8 · High KEV · sudah dieksploitasi EPSS 92,8%

Kerentanan Origin Validation Error pada langflow. Skor CVSS 3.1 8.8 (High) menurut NVD. Masuk katalog KEV CISA pada 21 Mei 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

Langflow versions up to and including 1.6.9 contain a chained vulnerability that enables account takeover and remote code execution. An overly permissive CORS configuration (allow_origins='*' with allow_credentials=True) combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. An attacker-controlled origin can therefore obtain fresh access_token / refresh_token pairs for a victim session. Obtained tokens permit access to authenticated endpoints — including built-in code-execution functionality — allowing the attacker to execute arbitrary code and achieve full system compromise.

Rincian

Terbit di NVD

5 Desember 2025

Terakhir diubah

8 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-346: Origin Validation Error

EPSS (30 hari)

92,8% peluang dieksploitasi; lebih tinggi dari 99,8% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Langflow Origin Validation Error Vulnerability

Masuk KEV

21 Mei 2026

Tenggat CISA

4 Juni 2026 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.obsidiansecurity.com/blog/cve-2025-34291-critical-account-takeover-and-rce-vulnerability-in-the-la... exploit · mitigasi · advisory pihak ketiga
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34291 pemerintah AS
• https://www.vulncheck.com/advisories/langflow-cors-misconfiguration-to-token-hijack-and-rce advisory pihak ketiga
• https://www.crowdsec.net/vulntracking-report/cve-2025-34291 advisory pihak ketiga
• https://github.com/langflow-ai/langflow product