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        "cveId": "CVE-2025-34291",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2025-04-15T19:15:22.581Z",
        "datePublished": "2025-12-05T22:27:26.438Z",
        "dateUpdated": "2026-07-14T22:25:54.449Z"
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                    "packageURL": "pkg:github/langflow-ai/langflow",
                    "modules": [
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                        "refresh token cookie handling"
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                    "product": "Langflow",
                    "repo": "https://github.com/langflow-ai/langflow",
                    "vendor": "Langflow",
                    "versions": [
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                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
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                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Fenix Qiao (aka 13ph03nix) from Obsidian Security"
                },
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                    "lang": "en",
                    "type": "finder",
                    "value": "Shuyang Wang from Obsidian Security"
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                            "value": "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."
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                }
            ],
            "impacts": [
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                    "capecId": "CAPEC-160",
                    "descriptions": [
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                            "lang": "en",
                            "value": "CAPEC-160 Exploit Script-Based APIs"
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                    "capecId": "CAPEC-21",
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                            "value": "CAPEC-21 Exploitation of Trusted Identifiers"
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                        "attackRequirements": "NONE",
                        "attackVector": "NETWORK",
                        "baseScore": 9.4,
                        "baseSeverity": "CRITICAL",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "userInteraction": "PASSIVE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
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                        "vulnAvailabilityImpact": "HIGH",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
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                    "format": "CVSS",
                    "scenarios": [
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                            "value": "GENERAL"
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                {
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                            "description": "CWE-346 Origin Validation Error",
                            "lang": "en",
                            "type": "CWE"
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                        "exploit"
                    ],
                    "url": "https://www.obsidiansecurity.com/blog/cve-2025-34291-critical-account-takeover-and-rce-vulnerability-in-the-langflow-ai-agent-workflow-platform"
                },
                {
                    "tags": [
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                    "url": "https://github.com/langflow-ai/langflow"
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                {
                    "tags": [
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                    "url": "https://www.vulncheck.com/advisories/langflow-cors-misconfiguration-to-token-hijack-and-rce"
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            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "Langflow <= 1.6.9 CORS Misconfiguration to Token Hijack & RCE",
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                        "url": "https://www.crowdsec.net/vulntracking-report/cve-2025-34291",
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                    {
                        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34291",
                        "tags": [
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                "metrics": [
                    {
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-21T00:00:00+00:00",
                                "options": [
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                                        "Exploitation": "active"
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                "title": "CISA ADP Vulnrichment",
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                    "dateUpdated": "2026-05-22T03:55:45.916Z"
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                    {
                        "time": "2026-05-21T00:00:00.000Z",
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