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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wren:wren:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B3A76EF-D824-491F-B1BF-07C619DE6D6D", "versionEndIncluding": "0.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in wren-lang wren up to 0.4.0. Affected is the function resolveLocal of the file src/vm/wren_compiler.c. The manipulation results in uncontrolled recursion. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en wren-lang wren hasta 0.4.0, la cual afecta a la funci\u00f3n resolveLocal del archivo src/vm/wren_compiler.c. Su manipulaci\u00f3n resulta en recursi\u00f3n incontrolada. Es necesario realizar el ataque en local. El exploit es ahora p\u00fablico y puede ser usado. Se inform\u00f3 con antelaci\u00f3n del problema al proyecto, a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido."}], "id": "CVE-2026-3385", "lastModified": "2026-04-29T01:00:01.613", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 1.7, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.1, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.9, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-03-01T09:15:57.040", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit"], "url": "https://github.com/oneafter/0122/blob/main/i1218/repro"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/wren-lang/wren/"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/wren-lang/wren/issues/1218"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.348271"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.348271"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.761305"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-404"}, {"lang": "en", "value": "CWE-674"}], "source": "cna@vuldb.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-674"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.4.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "wren", "source": "cna", "vendor": "wren-lang"}, "product": "wren", "vendor": "wren-lang"}], "analysis": {"en": {"generated_at": "2026-04-17T13:47:27.422846+00:00", "value": {"mitigation_remediation": ["Apply the latest release of Wren that contains the resolveLocal fix; if a fixed version is unavailable, plan a migration path to a patched build.", "If upgrading is not immediately possible, implement a runtime recursion depth limit in the compiler or employ static analysis tools to detect and flag vulnerable code paths.", "Restrict local execution of the Wren compiler to trusted users or isolate it in a sandboxed environment to reduce the risk that an attacker can trigger the recursion."], "summary": {"action": "Assess", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The vulnerability is present in all Wren releases up to and including 0.4.0. No specific sub\u2011version range is listed beyond the upper bound, and the CVE catalog identifies the vendor as wren-lang and the product as Wren.", "description_and_impact": "The issue occurs in the resolveLocal routine of Wren\u2019s compiler and allows a local attacker to trigger uncontrolled recursion. The recursion can exhaust stack or heap resources, resulting in a crash or unresponsive state of the compiling process or the entire host application. The weakness is a classic uncontrolled recursion flaw, reflected in the CWE-674 identifier. No remote execution is possible; the attacker must have local code execution capability to trigger the effect.", "risk_and_exploitability": "The CVSS score of 4.8 indicates a moderate severity, while the EPSS score of less than 1% signals that public exploitation is currently unlikely. The vulnerability is not in the CISA KEV list. Attacking requires local exploitation, so the attack surface is restricted to insiders or compromised local accounts. A local attacker that can invoke the Wren compiler can force a denial of service by exhausting resources, but no privacy or integrity impact would normally result unless the attacker can influence other processes."}}}}, "created": "2026-03-02T12:04:08.846968+00:00", "title": "Uncontrolled Recursion in Wren Compiler Resulting in Local Denial of Service", "updated": "2026-04-17T14:00:15.795898+00:00", "vendors": ["wren-lang", "wren-lang$PRODUCT$wren"]}