Answer in brief
CVE-2026-73413 records a High severity vulnerability in Shescape: Quadratic-time denial of service in flag-protection. The current sources do not mark it as known exploited. The current feed maps ericcornelissen/shescape (generic), shescape (npm), shescape (npm), shescape (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-73413 records a High severity vulnerability in Shescape: Quadratic-time denial of service in flag-protection. The current sources do not mark it as known exploited. The current feed maps ericcornelissen/shescape (generic), shescape (npm), shescape (npm), shescape (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ericcornelissen/shescape (generic), shescape (npm), shescape (npm), shescape (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ericcornelissen/shescapegeneric | >= 2.1.11, < 2.1.14 || >= 3.0.0, < 3.0.1 | Not reported |
| shescapenpm | >=2.1.11 <2.1.14 | 2.1.14 |
| shescapenpm | >=3.0.0 <3.0.1 | 3.0.1 |
| shescapenpm | >=2.1.11,<2.1.14 | 2.1.14 |
| shescapenpm | >=3.0.0,<3.0.1 | 3.0.1 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
Shescape is a simple shell escape library for JavaScript. From 2.1.11 until 2.1.14 and 3.0.1, the flag-protection loop in compose in src/internal/compose.js repeatedly joins and slices flag fragments when flagProtection is enabled, which is the default, making processing quadratic in input size across the escape, escapeAll, quote, and quoteAll APIs. An attacker who can supply a large untrusted input containing many flag fragments can consume CPU and cause denial of service. This issue is fixed in versions 2.1.14 and 3.0.1.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps ericcornelissen/shescape (generic), shescape (npm), shescape (npm), shescape (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| ericcornelissen/shescapegeneric | >= 2.1.11, < 2.1.14 || >= 3.0.0, < 3.0.1 | Not reported |
| shescapenpm | >=2.1.11 <2.1.14 | 2.1.14 |
| shescapenpm | >=3.0.0 <3.0.1 | 3.0.1 |
| shescapenpm | >=2.1.11,<2.1.14 | 2.1.14 |
| shescapenpm | >=3.0.0,<3.0.1 | 3.0.1 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
Shescape is a simple shell escape library for JavaScript. From 2.1.11 until 2.1.14 and 3.0.1, the flag-protection loop in compose in src/internal/compose.js repeatedly joins and slices flag fragments when flagProtection is enabled, which is the default, making processing quadratic in input size across the escape, escapeAll, quote, and quoteAll APIs. An attacker who can supply a large untrusted input containing many flag fragments can consume CPU and cause denial of service. This issue is fixed in versions 2.1.14 and 3.0.1.
Quoted source text, attributed separately from HOL analysis.