OpenWrt Project is a Linux operating system targeting embedded devices. In versions prior to both 24.10.6 and 25.12.1, the jp_get_token function, which performs lexical analysis by breaking input expressions into tokens, contains a memory leak vulnerability when extracting string literals, field labels, and regular expressions using dynamic memory allocation. These extracted results are stored in a jp_opcode struct, which is later copied to a newly allocated jp_opcode object via jp_alloc_op. During this transfer, if a string was previously extracted and stored in the initial jp_opcode, it is copied to the new allocation but the original memory is never freed, resulting in a memory leak. This issue has been fixed in versions 24.10.6 and 25.12.1.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-401"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30873.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "25.12.0-rc1"
},
{
"fixed": "25.12.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "24.10.6"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"original_tag": "v24.10.6",
"range": [
{
"fixed": "ec8eeaa8fbd3122b9b9e68b7db02707884a19c9c"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "v25.12.1",
"range": [
{
"fixed": "d6115e42127481645ae7210c9d8ca1bd14313473"
}
],
"source": "REFERENCES_TAG"
}
]
}