OpenWrt Project jsonpath: Memory leak when processing strings, labels, and regexp tokens

{
  "id": "7de462743167b61ca4dda0bab88ea96a442dc390bfc8996f2152db750a4ff297",
  "url": "https://osv.dev/vulnerability/CVE-2026-30873",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenWrt Project jsonpath: Memory leak when processing strings, labels, and regexp tokens",
    "summary": "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.",
    "evidence": "osv:CVE-2026-30873",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-30873",
      "aliases": [
        "CVE-2026-30873",
        "GHSA-rcc6-v4r6-gj4m"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openwrt/openwrt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b1a74b1cde0dd9b4c07bb5ba7020f94967912f2d"
                },
                {
                  "fixed": "d6115e42127481645ae7210c9d8ca1bd14313473"
                },
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ec8eeaa8fbd3122b9b9e68b7db02707884a19c9c"
                }
              ],
              "database_specific": {
                "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"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ec8eeaa8fbd3122b9b9e68b7db02707884a19c9c"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v24.10.6"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d6115e42127481645ae7210c9d8ca1bd14313473"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v25.12.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v25.12.0",
            "v25.12.0-rc5",
            "v25.12.0-rc4",
            "v25.12.0-rc3",
            "v25.12.0-rc2",
            "v25.12.0-rc1",
            "v24.10.5",
            "v24.10.4",
            "v24.10.3",
            "v24.10.2",
            "v24.10.1",
            "v24.10.0",
            "v24.10.0-rc7",
            "v24.10.0-rc6",
            "v24.10.0-rc5",
            "v24.10.0-rc4",
            "v24.10.0-rc3",
            "v24.10.0-rc2",
            "v24.10.0-rc1",
            "reboot"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30873.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.710249148Z",
      "provider": "osv",
      "references": [
        "https://github.com/openwrt/openwrt/releases/tag/v24.10.6",
        "https://github.com/openwrt/openwrt/releases/tag/v25.12.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30873.json",
        "https://github.com/openwrt/openwrt/security/advisories/GHSA-rcc6-v4r6-gj4m",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-30873"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-401"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30873.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-30873",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487676,
  "published_at": "2026-03-19T22:01:03.867+00:00"
}