{"id":"CVE-2019-16762","aliases":["EUVD-2019-0725","GHSA-425c-ccf3-3jrr"],"status":"published","title":"Validator parsing discrepancy due to string encoding in NPM slpjs","description":"A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus. Affected users can upgrade to any version \u003e= 0.21.4.","severity":{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01096,"percentile":0.65822,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2019-11-15T23:10:35Z","modified":"2026-10-20T10:52:27Z","fixes":[{"ecosystem":"npm","package":"slpjs","fixed_in":["0.21.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"slpjs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.21.4"}]}]},{"source":"osv","ecosystem":"npm","package":"slpjs","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.21.4"}]}]}],"products":[{"vendor":"simpleledger","product":"slpjs"}],"references":[{"url":"https://github.com/simpleledger/slpjs/security/advisories/GHSA-425c-ccf3-3jrr","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/simpleledger/slpjs/commit/ac8809b42e47790a6f0205991b36f2699ed10c84#diff-fe58606994c412ba56a65141a7aa4a62L701","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16762","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-425c-ccf3-3jrr","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2019-16762","title":"Validator parsing discrepancy due to string encoding in NPM slpjs","description":"A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus. Affected users can upgrade to any version \u003e= 0.21.4.","status":"published","published":"2019-11-15T23:10:57Z","modified":"2024-08-05T01:24:47.227Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:23.189113Z"}],"euvd":[{"id":"EUVD-2019-0725","description":"A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus. Affected users can upgrade to any version \u003e= 0.21.4.","status":"published","published":"2019-11-15T23:10:57Z","modified":"2024-08-05T01:24:47Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"updated_at":"2026-11-03T02:40:32.32735Z"}],"ghsa":[{"id":"GHSA-425c-ccf3-3jrr","title":"Critical severity vulnerability that affects slpjs","description":"## Validator parsing discrepancy due to string encoding\n\n### Impact\nA specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus.\n\n### Patches\nAll versions \u003e 0.21.3 are patched.\n\n### Workarounds\nUpgrade to any version \u003e= 0.21.4.\n\n### References\nThe bug was located and fixed [here](https://github.com/simpleledger/slpjs/commit/ac8809b42e47790a6f0205991b36f2699ed10c84#diff-fe58606994c412ba56a65141a7aa4a62L701).\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in the [slpjs repo](https://github.com/simpleledger/slpjs/issues)\n* Email us at [info@slp.cash](mailto:info@slp.cash)","status":"published","published":"2019-11-15T23:10:35Z","modified":"2023-01-09T05:02:40Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:36:03.768255Z"}],"nvd":[{"id":"CVE-2019-16762","description":"A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus. Affected users can upgrade to any version \u003e= 0.21.4.","status":"published","published":"2019-11-15T23:15:11.443Z","modified":"2026-06-17T02:22:44.897Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:05:37.024431Z"}],"osv":[{"id":"CVE-2019-16762","description":"A specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus. Affected users can upgrade to any version \u003e= 0.21.4.","status":"published","published":"2019-11-15T23:15:11.443Z","modified":"2026-10-20T10:52:27.096159347Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:11.673963Z"},{"id":"GHSA-425c-ccf3-3jrr","title":"Critical severity vulnerability that affects slpjs","description":"## Validator parsing discrepancy due to string encoding\n\n### Impact\nA specially crafted Bitcoin script can cause a discrepancy between the specified SLP consensus rules and the validation result of the slpjs npm package. An attacker could create a specially crafted Bitcoin script in order to cause a hard-fork from the SLP consensus.\n\n### Patches\nAll versions \u003e 0.21.3 are patched.\n\n### Workarounds\nUpgrade to any version \u003e= 0.21.4.\n\n### References\nThe bug was located and fixed [here](https://github.com/simpleledger/slpjs/commit/ac8809b42e47790a6f0205991b36f2699ed10c84#diff-fe58606994c412ba56a65141a7aa4a62L701).\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in the [slpjs repo](https://github.com/simpleledger/slpjs/issues)\n* Email us at [info@slp.cash](mailto:info@slp.cash)","status":"published","published":"2019-11-15T23:10:35Z","modified":"2026-07-08T05:59:53.399179132Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:46:36.434231Z"}]}}