{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-108954", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-10-11T19:06:03.097Z", "datePublished": "2026-10-13T01:30:26.511Z", "dateUpdated": "2026-10-13T01:30:26.511Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-10-13T01:30:26.511Z"}, "title": "k2-fsa sherpa-onnx Offline Transducer Greedy Search Decoder offline-transducer-greedy-search-decoder.cc Decode buffer overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "k2-fsa", "product": "sherpa-onnx", "versions": [{"version": "1.13.0", "status": "affected"}, {"version": "1.13.1", "status": "affected"}, {"version": "1.13.2", "status": "affected"}, {"version": "1.13.3", "status": "affected"}, {"version": "1.13.4", "status": "affected"}, {"version": "1.13.5", "status": "affected"}, {"version": "1.13.6", "status": "affected"}, {"version": "1.13.7", "status": "affected"}, {"version": "1.13.8", "status": "affected"}], "cpes": ["cpe:2.3:a:k2-fsa:sherpa-onnx:*:*:*:*:*:*:*:*"], "modules": ["Offline Transducer Greedy Search Decoder"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was found in k2-fsa sherpa-onnx up to 1.13.8. This issue affects the function OfflineTransducerGreedySearchDecoder::Decode of the file sherpa-onnx/csrc/offline-transducer-greedy-search-decoder.cc of the component Offline Transducer Greedy Search Decoder. The manipulation of the argument vocab_size results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used. If only official model packs are used and they always keep metadata consistent with the joiner, the bug may not be reachable in normal supported usage. However, from a security and robustness standpoint, the code still contains the vulnerability because it trusts unvalidated model metadata and can be triggered by a malformed or tampered model pack."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "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", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 6.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 6.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C"}}], "timeline": [{"time": "2026-10-11T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-10-11T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-10-11T21:11:11.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Dem0 (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/416773", "name": "VDB-416773 | k2-fsa sherpa-onnx Offline Transducer Greedy Search Decoder offline-transducer-greedy-search-decoder.cc Decode buffer overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/416773/cti", "name": "VDB-416773 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-108954", "name": "CVE-2026-108954 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/997824", "name": "Submit #997824 | k2-fsa sherpa-onnx up to 1.13.8 (master commit 040afe360a38e25daaa325ce8889abf93ea02609 also affected) Heap-based Buffer Overflow", "tags": ["third-party-advisory"]}, {"url": "https://github.com/k2-fsa/sherpa-onnx/issues/3983", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/k2-fsa/sherpa-onnx/issues/3983#issuecomment-5871985324", "tags": ["issue-tracking"]}, {"url": "https://github.com/k2-fsa/sherpa-onnx/", "tags": ["product"]}], "x_generator": ["VulDB PVTS v202610"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:k2-fsa:sherpa-onnx:*:*:*:*:*:*:*:*"], "modules": ["Offline Transducer Greedy Search Decoder"], "product": "sherpa-onnx", "vendor": "k2-fsa", "versions": [{"status": "affected", "version": "1.13.0"}, {"status": "affected", "version": "1.13.1"}, {"status": "affected", "version": "1.13.2"}, {"status": "affected", "version": "1.13.3"}, {"status": "affected", "version": "1.13.4"}, {"status": "affected", "version": "1.13.5"}, {"status": "affected", "version": "1.13.6"}, {"status": "affected", "version": "1.13.7"}, {"status": "affected", "version": "1.13.8"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in k2-fsa sherpa-onnx up to 1.13.8. This issue affects the function OfflineTransducerGreedySearchDecoder::Decode of the file sherpa-onnx/csrc/offline-transducer-greedy-search-decoder.cc of the component Offline Transducer Greedy Search Decoder. The manipulation of the argument vocab_size results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used. If only official model packs are used and they always keep metadata consistent with the joiner, the bug may not be reachable in normal supported usage. However, from a security and robustness standpoint, the code still contains the vulnerability because it trusts unvalidated model metadata and can be triggered by a malformed or tampered model pack."}], "id": "CVE-2026-108954", "lastModified": "2026-10-13T13:29:12.567", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-10-13T02:16:57.503", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/k2-fsa/sherpa-onnx/"}, {"source": "cna@vuldb.com", "url": "https://github.com/k2-fsa/sherpa-onnx/issues/3983"}, {"source": "cna@vuldb.com", "url": "https://github.com/k2-fsa/sherpa-onnx/issues/3983#issuecomment-5871985324"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-108954"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/997824"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/416773"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/416773/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-120"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.13.8"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "sherpa-onnx", "source": "cna", "vendor": "k2-fsa"}, "product": "sherpa-onnx", "vendor": "k2-fsa"}], "created": "2026-10-13T03:30:17.116185+00:00", "updated": "2026-10-13T07:23:41.565285+00:00", "vendors": ["k2-fsa", "k2-fsa$PRODUCT$sherpa-onnx"]}