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3 vulnerabilities found for Binaryen by WebAssembly

CVE-2026-8257 (GCVE-0-2026-8257)
Vulnerability from cvelistv5
Published
2026-05-11 00:30
Modified
2026-05-11 17:31
Severity ?
1.9 (Low) - 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
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.3 (Low) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CWE
Summary
A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The exploit is now public and may be used. The patch is named 1251efbc1ea471c1311d2726b2bbe061ff2a291c. It is suggested to install a patch to address this issue.
References
Impacted products
Vendor Product Version
WebAssembly Binaryen Version: 117
    cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*
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CVE-2025-14957 (GCVE-0-2025-14957)
Vulnerability from cvelistv5
Published
2025-12-19 17:02
Modified
2026-02-24 05:57
Severity ?
1.9 (Low) - 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
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
3.3 (Low) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CWE
Summary
A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer dereference. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is 6fb2b917a79578ab44cf3b900a6da4c27251e0d4. Applying a patch is advised to resolve this issue.
References
Impacted products
Vendor Product Version
WebAssembly Binaryen Version: 125
    cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2025-14956 (GCVE-0-2025-14956)
Vulnerability from cvelistv5
Published
2025-12-19 16:32
Modified
2026-02-24 05:57
Severity ?
1.9 (Low) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
5.3 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CWE
Summary
A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
References
Impacted products
Vendor Product Version
WebAssembly Binaryen Version: 125
    cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website

To clipboard 

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        }
      ],
      "title": "WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-14956",
    "datePublished": "2025-12-19T16:32:12.536Z",
    "dateReserved": "2025-12-19T08:38:51.694Z",
    "dateUpdated": "2026-02-24T05:57:29.961Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}