Coverage › CVE-2025-34291
CVE-2025-34291 Unmapped
Langflow Origin Validation Error Vulnerability
- Vendor / product
- Langflow — Langflow
- Description (CISA)
- Langflow contains an origin validation error vulnerability in which an overly permissive CORS configuration 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. This could allow the attacker to execute arbitrary code and achieve full system compromise via obtained tokens that permit access to authenticated endpoints.
- Added to KEV
- 2026-05-21 — after the latest CTID mapping snapshot (2025-07-28)
- Due date
- 2026-06-04
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Known ransomware use
- Unknown
- CWE
- CWE-346
- CISA notes
- This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/langflow-ai/langflow
https://github.com/langflow-ai/langflow/releases/tag/v1.9.3
https://github.com/langflow-ai/langflow/issues/11465#event-25774545848
https://nvd.nist.gov/vuln/detail/CVE-2025-34291 - Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques
No public source states how this vulnerability is exploited in ATT&CK terms.
The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2025-34291. This entry was added to KEV on 2026-05-21, after that snapshot; of the 283 entries added since, 0 have a mapping. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-346) — here is why — and does not guess.
This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.