{"id":"CVE-2020-15131","aliases":["EUVD-2020-0540","GHSA-6jmr-jfh7-xg3h"],"status":"published","title":"False-positive validity for NFT1 genesis transactions in SLP Validate","description":"In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification. This is fixed in version 1.2.2.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01036,"percentile":0.64366,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-697"],"published":"2020-07-30T14:58:53Z","modified":"2026-10-20T10:51:52Z","fixes":[{"ecosystem":"npm","package":"slp-validate","fixed_in":["1.2.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"slp-validate","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2"}]}]},{"source":"osv","ecosystem":"npm","package":"slp-validate","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.2"}]}]}],"products":[{"vendor":"simpleledger","product":"slp-validate"},{"vendor":"simpleledger","product":"slp-validate.js"}],"references":[{"url":"https://github.com/simpleledger/slp-validate.js/security/advisories/GHSA-6jmr-jfh7-xg3h","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/simpleledger/slp-validate.js/commit/3963cf914afae69084059b82483da916d97af65c","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15131","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6jmr-jfh7-xg3h"}],"sources":{"cve":[{"id":"CVE-2020-15131","title":"False-positive validity for NFT1 genesis transactions in SLP Validate","description":"In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification. This is fixed in version 1.2.2.","status":"published","published":"2020-07-30T15:00:17Z","modified":"2024-08-04T13:08:22.279Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:35:50.228781Z"}],"euvd":[{"id":"EUVD-2020-0540","description":"In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification. This is fixed in version 1.2.2.","status":"published","published":"2020-07-30T15:00:17Z","modified":"2024-08-04T13:08:22Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:07:33.100327Z"}],"ghsa":[{"id":"GHSA-6jmr-jfh7-xg3h","title":"False-positive validity for NFT1 genesis transactions","description":"### Impact\nIn the npm package named \"slp-validate\", versions prior to 1.2.2 are vulnerable to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification.\n\n### Patches\nnpm package \"slp-validate\" has been patched and is published and tagged as version 1.2.2.\n\n### Workarounds\nUpgrade to slp-validate 1.2.2.\n\n### References\n* Package location: https://www.npmjs.com/package/slp-validate\n* SLP NFT1 spec: https://slp.dev/specs/slp-nft-1/#nft1-protocol-requirements\n* Git commit hash fixing this issue: https://github.com/simpleledger/slp-validate.js/commit/3963cf914afae69084059b82483da916d97af65c\n* Unit tests have been added to assist validator implementations in avoiding this bug: https://github.com/simpleledger/slp-unit-test-data/commit/8c942eacfae12686dcf1f3366321445a4fba73e7\n\n### For more information\nIf you have any questions or comments about this advisory please open an issue in the [slp-validate](https://github.com/simpleledger/slp-validate.js/issues) repository.","status":"published","published":"2020-07-30T14:58:53Z","modified":"2023-01-09T05:03:40Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:36:05.705235Z"}],"nvd":[{"id":"CVE-2020-15131","description":"In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification. This is fixed in version 1.2.2.","status":"published","published":"2020-07-30T15:15:13.15Z","modified":"2026-06-17T02:56:06.753Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:06:10.994748Z"}],"osv":[{"id":"CVE-2020-15131","description":"In SLP Validate (npm package slp-validate) before version 1.2.2, there is a vulnerability to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification. This is fixed in version 1.2.2.","status":"published","published":"2020-07-30T15:15:13.15Z","modified":"2026-10-20T10:51:52.1743526Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:14.418339Z"},{"id":"GHSA-6jmr-jfh7-xg3h","title":"False-positive validity for NFT1 genesis transactions","description":"### Impact\nIn the npm package named \"slp-validate\", versions prior to 1.2.2 are vulnerable to false-positive validation outcomes for the NFT1 Child Genesis transaction type. A poorly implemented SLP wallet or opportunistic attacker could create a seemingly valid NFT1 child token without burning any of the NFT1 Group token type as is required by the NFT1 specification.\n\n### Patches\nnpm package \"slp-validate\" has been patched and is published and tagged as version 1.2.2.\n\n### Workarounds\nUpgrade to slp-validate 1.2.2.\n\n### References\n* Package location: https://www.npmjs.com/package/slp-validate\n* SLP NFT1 spec: https://slp.dev/specs/slp-nft-1/#nft1-protocol-requirements\n* Git commit hash fixing this issue: https://github.com/simpleledger/slp-validate.js/commit/3963cf914afae69084059b82483da916d97af65c\n* Unit tests have been added to assist validator implementations in avoiding this bug: https://github.com/simpleledger/slp-unit-test-data/commit/8c942eacfae12686dcf1f3366321445a4fba73e7\n\n### For more information\nIf you have any questions or comments about this advisory please open an issue in the [slp-validate](https://github.com/simpleledger/slp-validate.js/issues) repository.","status":"published","published":"2020-07-30T14:58:53Z","modified":"2026-09-10T03:48:48.257262904Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T15:46:39.965326Z"}]}}