k2-fsa sherpa-onnx Offline Transducer Greedy Search Decoder offline-transducer-greedy-search-decoder.cc Decode buffer overflow
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.
CVE-2026-108954
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-108954
sherpa-onnx
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"cpes": [
"cpe:2.3:a:k2-fsa:sherpa-onnx:*:*:*:*:*:*:*:*"
],
"vendor": "k2-fsa",
"modules": [
"Offline Transducer Greedy Search Decoder"
],
"product": "sherpa-onnx",
"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"
}
]
}
]- Related CVEs
- CVE-2026-108954
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #21867 · Revision 1
- Added to Heist Feed
- Publisher date