{"id":"CVE-2024-21524","aliases":["EUVD-2024-2343","GHSA-g533-xq5w-jmf3"],"status":"published","title":"node-stringbuilder vulnerable to Out-of-bounds Read","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0087,"percentile":0.59098,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2024-07-10T05:00:05Z","modified":"2026-10-28T02:30:52Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"node-stringbuilder","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.2.7"}]}]},{"source":"osv","ecosystem":"npm","package":"node-stringbuilder","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.2.7"}]}]}],"products":[{"vendor":"magiclen","product":"node-stringbuilder"},{"vendor":"magiclen","product":"stringbuilder"}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617","tags":["x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281","tags":["x_transferred","Broken Link","web"]},{"url":"https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67","tags":["x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21524","tags":["advisory"]},{"url":"https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281","tags":["web"]},{"url":"https://github.com/advisories/GHSA-g533-xq5w-jmf3"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21524.json","tags":["advisory"]},{"url":"https://github.com/magiclen/node-stringbuilder","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-21524","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","status":"published","published":"2024-07-10T05:00:05.257Z","modified":"2024-08-01T22:27:34.821Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:34:04.681315Z"}],"euvd":[{"id":"EUVD-2024-2343","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","status":"published","published":"2024-07-10T05:00:05Z","modified":"2024-08-01T22:27:34Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P","level":"high"}],"updated_at":"2026-11-03T03:50:29.983832Z"}],"ghsa":[{"id":"GHSA-g533-xq5w-jmf3","title":"node-stringbuilder vulnerable to Out-of-bounds Read","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","status":"published","published":"2024-07-10T06:33:52Z","modified":"2024-08-09T05:01:39Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:37:59.336921Z"}],"nvd":[{"id":"CVE-2024-21524","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","status":"published","published":"2024-07-10T05:15:11.34Z","modified":"2026-06-17T07:09:40.537Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:10:12.016585Z"}],"osv":[{"id":"CVE-2024-21524","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","status":"published","published":"2024-07-10T05:00:05.257Z","modified":"2026-10-28T02:30:52.7722186Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:44:38.577405Z"},{"id":"GHSA-g533-xq5w-jmf3","title":"node-stringbuilder vulnerable to Out-of-bounds Read","description":"All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.","status":"published","published":"2024-07-10T06:33:52Z","modified":"2024-07-10T20:59:36.987396Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high"},{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:46:47.119724Z"}]}}