Vulnerability in Ljharb Shell-quote
CVE-2026-13311
shell-quote prior to 1.8.5 finalizes parsed tokens in parse() using Array.prototype.concat as a reduce accumulator, which reallocates and copies the entire growing array on every iteration. As a result parse() runs in O(n^2) time relative…
EPSS: 0.004 (27.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Ljharb Shell-quote — versions 0
Weakness classification (CWE)
References
- 7ffcee3d-2c14-4c3e-b844-86c6a321a158 (vendor-advisory)
- 7ffcee3d-2c14-4c3e-b844-86c6a321a158 (product)
Frequently asked questions
- What is CVE-2026-13311?
- CVE-2026-13311 is a high-severity vulnerability in Ljharb Shell-quote, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-06-25.
- How severe is CVE-2026-13311?
- High severity. CVSS v3 base score is 7.5 out of 10.