CVE-2026-2657

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-2657", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-02-18T06:46:13.637Z", "datePublished": "2026-02-18T16:32:07.566Z", "dateUpdated": "2026-02-23T10:18:07.494Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-02-23T10:18:07.494Z"}, "title": "wren-lang wren Error Message wren_compiler.c printError stack-based overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-121", "lang": "en", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "wren-lang", "product": "wren", "versions": [{"version": "0.1", "status": "affected"}, {"version": "0.2", "status": "affected"}, {"version": "0.3", "status": "affected"}, {"version": "0.4.0", "status": "affected"}], "modules": ["Error Message Handler"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in wren-lang wren up to 0.4.0. This impacts the function printError of the file src/vm/wren_compiler.c of the component Error Message Handler. Such manipulation leads to stack-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.8, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 3.3, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R", "baseSeverity": "LOW"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 3.3, "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R", "baseSeverity": "LOW"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 1.7, "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-02-18T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-02-18T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-02-21T18:45:39.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Oneafter (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/?id.346455", "name": "VDB-346455 | wren-lang wren Error Message wren_compiler.c printError stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.346455", "name": "VDB-346455 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.752791", "name": "Submit #752791 | wren-lang wren main branch Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/wren-lang/wren/issues/1221", "tags": ["issue-tracking"]}, {"url": "https://github.com/oneafter/0122/blob/main/i1221/repro", "tags": ["exploit"]}, {"url": "https://github.com/wren-lang/wren/", "tags": ["product"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-02-18T17:53:55.287345Z", "id": "CVE-2026-2657", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-18T18:07:59.876Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-2657", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-02-18T17:53:55.287345Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-18T18:00:43.381Z"}}], "cna": {"title": "wren-lang wren Error Message wren_compiler.c printError stack-based overflow", "credits": [{"lang": "en", "type": "reporter", "value": "Oneafter (VulDB User)"}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.8, "baseSeverity": "MEDIUM", "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"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 3.3, "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 3.3, "baseSeverity": "LOW", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 1.7, "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}], "affected": [{"vendor": "wren-lang", "modules": ["Error Message Handler"], "product": "wren", "versions": [{"status": "affected", "version": "0.1"}, {"status": "affected", "version": "0.2"}, {"status": "affected", "version": "0.3"}, {"status": "affected", "version": "0.4.0"}]}], "timeline": [{"lang": "en", "time": "2026-02-18T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-02-18T01:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-02-21T18:45:39.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/?id.346455", "name": "VDB-346455 | wren-lang wren Error Message wren_compiler.c printError stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.346455", "name": "VDB-346455 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.752791", "name": "Submit #752791 | wren-lang wren main branch Stack-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/wren-lang/wren/issues/1221", "tags": ["issue-tracking"]}, {"url": "https://github.com/oneafter/0122/blob/main/i1221/repro", "tags": ["exploit"]}, {"url": "https://github.com/wren-lang/wren/", "tags": ["product"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in wren-lang wren up to 0.4.0. This impacts the function printError of the file src/vm/wren_compiler.c of the component Error Message Handler. Such manipulation leads to stack-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-119", "description": "Memory Corruption"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-02-23T10:18:07.494Z"}}}, "cveMetadata": {"cveId": "CVE-2026-2657", "state": "PUBLISHED", "dateUpdated": "2026-02-23T10:18:07.494Z", "dateReserved": "2026-02-18T06:46:13.637Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-02-18T16:32:07.566Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"modules": ["Error Message Handler"], "product": "wren", "vendor": "wren-lang", "versions": [{"status": "affected", "version": "0.1"}, {"status": "affected", "version": "0.2"}, {"status": "affected", "version": "0.3"}, {"status": "affected", "version": "0.4.0"}]}], "source": "cna@vuldb.com"}], "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 has been found in wren-lang wren up to 0.4.0. This impacts the function printError of the file src/vm/wren_compiler.c of the component Error Message Handler. Such manipulation leads to stack-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the 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. que afecta a la funci\u00f3n printError del archivo src/vm/wren_compiler.c del componente Error Message Handler. Su explotaci\u00f3n conduce a un desbordamiento de b\u00fafer basado en pila. El ataque debe ser abordado localmente. El exploit ha sido divulgado al p\u00fablico y puede ser usado. El proyecto fue informado del problema tempranamente a trav\u00e9s de un informe de problema pero no ha respondido a\u00fan."}], "id": "CVE-2026-2657", "lastModified": "2026-06-17T10:31:28.880", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-2657", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-18T17:53:55.287345Z", "version": "2.0.3"}}]}, "published": "2026-02-18T17:21:40.400", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit"], "url": "https://github.com/oneafter/0122/blob/main/i1221/repro"}, {"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/wren-lang/wren/"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/wren-lang/wren/issues/1221"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?ctiid.346455"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.346455"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.752791"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"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": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "wren", "source": "cna", "vendor": "wren-lang"}, "product": "wren", "vendor": "wren-lang"}], "analysis": {"en": {"generated_at": "2026-04-18T11:56:26.641516+00:00", "value": {"mitigation_remediation": ["Upgrade the Wren interpreter to a newer version that patches the printError buffer overflow.", "If no patched version is available, avoid executing untrusted or arbitrary Wren code on vulnerable systems.", "Recompile Wren with stack protection options such as compiler flags for stack guard or address sanitizer to detect potential overflows."], "summary": {"action": "Patching", "impact": "Stack-Based Buffer Overflow"}, "threat_synthesis": {"affected_systems": "The affected product is wren-lang\u2019s Wren interpreter, up to version 0.4.0. No later version information is provided, so any installation of the specified range should be considered vulnerable. The vulnerability is tied to the wren component listed as wren-lang:wren in the CNA data.", "description_and_impact": "The vulnerability lies in the printError function of wren's compiler component, where improper handling of error messages can overflow a stack buffer. This flaw allows an attacker with local access to corrupt the stack, potentially leading to execution of arbitrary code or a crash. The weakness corresponds to CWE-119 and CWE-121, indicating unsafe memory handling and lack of bounds checking. The impact is confined to denial of service or local privilege escalation, depending on the execution context of the vulnerable process.", "risk_and_exploitability": "The CVSS base score is 4.8, indicating a low to moderate severity. The EPSS score is below 1 percent, showing a very low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Attack execution requires local access, so remote exploitation is unlikely without additional compromise. The lack of a public exploit suggests limited exploitation, but the local nature of the vulnerability means it can be abused by users with sufficient privileges on the host running Wren."}}}}, "created": "2026-02-19T10:11:39.244017+00:00", "updated": "2026-04-18T12:00:05.892732+00:00", "vendors": ["wren-lang", "wren-lang$PRODUCT$wren"]}