{"id":"CVE-2026-96780","aliases":["CLSA-2026-1791051095","EUVD-2026-91058","GHSA-62ch-8vmq-8xm7"],"status":"published","title":"figlet is vulnerable to denial of service via unbounded loop when whitespaceBreak is used with a small width","description":"figlet.js is a FIG driver written in JavaScript that aims to implement the FIGfont specification. Prior to 1.11.3, text() and textSync() can enter an unbounded loop when whitespaceBreak is enabled and width is smaller than the rendered width of a single FIGlet character. Under these conditions, breakWord() cannot find a valid break point and returns without consuming a character, so generateFigTextLines() repeatedly processes the same input while consuming CPU and growing memory. The non-default option and attacker-controlled width must both reach an affected call. This issue is fixed in version 1.11.3.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00495,"percentile":0.42969,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-835"],"published":"2026-10-01T20:21:54Z","modified":"2026-10-28T02:31:06Z","fixes":[{"ecosystem":"npm","package":"figlet","fixed_in":["1.11.3"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:npm","package":"figlet","fixed_in":["1.9.1-tuxcare.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"figlet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.3"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"figlet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.9.1-tuxcare.0"},{"fixed":"1.9.1-tuxcare.1"}]}],"versions":["1.9.1"]},{"source":"osv","ecosystem":"npm","package":"figlet","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.11.3"}]}]}],"products":[{"vendor":"patorjk","product":"figlet.js"}],"references":[{"url":"https://github.com/patorjk/figlet.js/security/advisories/GHSA-62ch-8vmq-8xm7","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/patorjk/figlet.js/pull/169","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/patorjk/figlet.js/commit/cb2839d0e53aeafbd361e9587abc72e49e41cbb3","tags":["x_refsource_MISC","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96780","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-62ch-8vmq-8xm7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/96xxx/CVE-2026-96780.json","tags":["advisory"]},{"url":"https://github.com/patorjk/figlet.js","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-96780","title":"figlet is vulnerable to denial of service via unbounded loop when whitespaceBreak is used with a small width","description":"figlet.js is a FIG driver written in JavaScript that aims to implement the FIGfont specification. Prior to 1.11.3, text() and textSync() can enter an unbounded loop when whitespaceBreak is enabled and width is smaller than the rendered width of a single FIGlet character. Under these conditions, breakWord() cannot find a valid break point and returns without consuming a character, so generateFigTextLines() repeatedly processes the same input while consuming CPU and growing memory. The non-default option and attacker-controlled width must both reach an affected call. This issue is fixed in version 1.11.3.","status":"published","published":"2026-10-01T20:21:54.408Z","modified":"2026-10-01T20:40:30.208Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:20:00.511569Z"}],"euvd":[{"id":"EUVD-2026-91058","description":"figlet.js is a FIG driver written in JavaScript that aims to implement the FIGfont specification. Prior to 1.11.3, text() and textSync() can enter an unbounded loop when whitespaceBreak is enabled and width is smaller than the rendered width of a single FIGlet character. Under these conditions, breakWord() cannot find a valid break point and returns without consuming a character, so generateFigTextLines() repeatedly processes the same input while consuming CPU and growing memory. The non-default option and attacker-controlled width must both reach an affected call. This issue is fixed in version 1.11.3.","status":"published","published":"2026-10-01T20:21:54Z","modified":"2026-10-01T20:40:30Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:43.593551Z"}],"ghsa":[{"id":"GHSA-62ch-8vmq-8xm7","title":"figlet is vulnerable to denial of service via unbounded loop when whitespaceBreak is used with a small width","description":"### Impact\nA denial-of-service (infinite loop) can occur in `text()` / `textSync()` when\n**both**:\n- `whitespaceBreak: true` is set, **and**\n- `width` is set smaller than the rendered width of a single FIGlet character.\nUnder these conditions `breakWord()` could never find a valid break point, so the\nword-wrapping loop in `generateFigTextLines()` never terminated. This pins a CPU\ncore and grows memory without bound, blocking the Node.js event loop.\n\n### Severity\nLow or Medium. Triggering requires a non-default configuration (`whitespaceBreak: true`) and\nan attacker-controlled `width` value reaching `text()`/`textSync()`. This library is typically\nused with fixed options, where this is not\nreachable. Applications that pass an untrusted `width` together with\n`whitespaceBreak` on a request path are affected.\n\n### Patches\nFixed in **figlet 1.11.3**. `breakWord()` now always makes forward progress\n(emitting an over-wide character on its own line), and FIGlet header parsing now\nrejects invalid values (e.g. zero/negative height).\n\n### Workarounds\nDo not expose `width` to untrusted input, or leave `whitespaceBreak` disabled\n(the default), or upgrade to 1.11.3.","status":"published","published":"2026-10-02T22:39:16Z","modified":"2026-10-02T22:39:17Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:41:24.739884Z"}],"nvd":[{"id":"CVE-2026-96780","description":"figlet.js is a FIG driver written in JavaScript that aims to implement the FIGfont specification. Prior to 1.11.3, text() and textSync() can enter an unbounded loop when whitespaceBreak is enabled and width is smaller than the rendered width of a single FIGlet character. Under these conditions, breakWord() cannot find a valid break point and returns without consuming a character, so generateFigTextLines() repeatedly processes the same input while consuming CPU and growing memory. The non-default option and attacker-controlled width must both reach an affected call. This issue is fixed in version 1.11.3.","status":"published","published":"2026-10-01T21:17:26.207Z","modified":"2026-10-02T18:47:49.947Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:12:53.41762Z"}],"osv":[{"id":"CVE-2026-96780","title":"figlet is vulnerable to denial of service via unbounded loop when whitespaceBreak is used with a small width","description":"figlet.js is a FIG driver written in JavaScript that aims to implement the FIGfont specification. Prior to 1.11.3, text() and textSync() can enter an unbounded loop when whitespaceBreak is enabled and width is smaller than the rendered width of a single FIGlet character. Under these conditions, breakWord() cannot find a valid break point and returns without consuming a character, so generateFigTextLines() repeatedly processes the same input while consuming CPU and growing memory. The non-default option and attacker-controlled width must both reach an affected call. This issue is fixed in version 1.11.3.","status":"published","published":"2026-10-01T20:21:54.408Z","modified":"2026-10-28T02:31:06.737739275Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:45:21.262447Z"},{"id":"GHSA-62ch-8vmq-8xm7","title":"figlet is vulnerable to denial of service via unbounded loop when whitespaceBreak is used with a small width","description":"### Impact\nA denial-of-service (infinite loop) can occur in `text()` / `textSync()` when\n**both**:\n- `whitespaceBreak: true` is set, **and**\n- `width` is set smaller than the rendered width of a single FIGlet character.\nUnder these conditions `breakWord()` could never find a valid break point, so the\nword-wrapping loop in `generateFigTextLines()` never terminated. This pins a CPU\ncore and grows memory without bound, blocking the Node.js event loop.\n\n### Severity\nLow or Medium. Triggering requires a non-default configuration (`whitespaceBreak: true`) and\nan attacker-controlled `width` value reaching `text()`/`textSync()`. This library is typically\nused with fixed options, where this is not\nreachable. Applications that pass an untrusted `width` together with\n`whitespaceBreak` on a request path are affected.\n\n### Patches\nFixed in **figlet 1.11.3**. `breakWord()` now always makes forward progress\n(emitting an over-wide character on its own line), and FIGlet header parsing now\nrejects invalid values (e.g. zero/negative height).\n\n### Workarounds\nDo not expose `width` to untrusted input, or leave `whitespaceBreak` disabled\n(the default), or upgrade to 1.11.3.","status":"published","published":"2026-10-02T22:39:16Z","modified":"2026-10-02T23:01:22.70622129Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:46:38.911014Z"},{"id":"CLSA-2026-1791051095","title":"TuxCare security update for figlet (1 CVE)","description":"TuxCare rebuilt figlet to address 1 CVE. Fixed in 1.9.1-tuxcare.1.","status":"published","published":"2026-10-03T18:11:35Z","modified":"2026-10-15T09:47:38.943893598Z","updated_at":"2026-11-02T15:43:49.016976Z"}]}}