CVE-2026-13311Patch(shell-quote_project / shell-quote)

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch shell-quote_project shell-quote systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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 to the number of input tokens. An attacker who can supply an attacker-controlled string to any code path that calls parse() (no shell metacharacters are required; plain space-separated words suffice) can block the single-threaded Node.js event loop for an extended period with a small input, resulting in a denial of service. There is no code execution or data disclosure; impact is to availability only. Fixed in 1.8.5.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-407

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • shell-quote

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-02); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Products
shell-quote

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-02: 1Mentions · 2026-07-21: 1Patch / Workaround · 2026-07-02: 1Technical Details · 2026-07-02: 1Technical Details · 2026-07-21: 107-0207-21
Signal classification2 categories
Patch
150.0%
General
150.0%
Referenced assets1 URL
Classification over time
DateTotalLabels
2026-07-021
Patch1
2026-07-211
General1
Full discourse2 posts
  • DailyCVE@dailycve
    General

    🔴 shell-quote (Nodejs), Denial of Service (Quadratic Complexity), #CVE-2026-13311 (High) -DC-Jul2026-1110 https://dailycve.com/shell-quote-nodejs-denial-of-service-quadratic-complexity-cve-2026-13311-high-dc-jul2026-1110/

    Post summary

    The excerpt identifies a high‑severity Denial of Service vulnerability in the Node.js shell-quote package and provides a reference link, but gives no further technical, exploit, or mitigation information.

    0000045
    220 followersView on X
  • Diego Artiles@dartilesm
    Patch

    🚨 shell-quote ≤1.8.4: CVE-2026-13311. parse() is O(n²). Plain spaces trigger it. No metacharacters needed. Event loop can freeze for 4+ seconds on modest inputs. Fix is in 1.9.0. Using shell-quote.parse() on user input? Upgrade now.

    Post summary

    CVE‑2026‑13311 in shell‑quote causes O(n²) processing that can freeze event loops; the issue is fixed in version 1.9.0, so an upgrade is recommended.

    0000038
    49 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appshell-quote_projectshell-quote-node.js-

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