CVE-2026-63655: tsparticles · Uncontrolled Resource Consumption
Affects tsparticlesSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 4.3.1 soon.
Data as of 5 Nov 2026, 00:16 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 7.5 |
|---|
- Patch
- Available – fixed in 4.3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 4 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade tsparticles and mcp-server to 4.3.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| tsparticlestsparticles | Affected
| Fixed in
|
| @tsparticlesmcp-server | Affected
| Fixed in
|
AI-suggested
Upgrade tsparticles to version 4.3.1 or later, where this vulnerability is fixed. No other mitigation is required as the fix addresses the uncontrolled resource consumption issue.
Description
CVE-2026-63655 is a high-severity vulnerability in the tsparticles TypeScript library prior to version 4.3.1. The HTTP mode of @tsparticles/mcp-server accepts unauthenticated POST requests and accumulates request body chunks in memory without size limits, allowing remote attackers to exhaust Node.js process memory and cause service termination. This issue does not affect confidentiality or integrity. The vulnerability is fixed in version 4.3.1.
References
- github.com/tsparticles/tsparticles/security/advisories/GHSA-447x-qqwf-m7xq (opens in a new tab)
- github.com/tsparticles/tsparticles/pull/5875 (opens in a new tab)
- github.com/tsparticles/tsparticles/commit/25fb70e7f527a91568adaef576570289083f243b (opens in a new tab)
- github.com/tsparticles/tsparticles/commit/7b3a9488d4201fe9ddd5fec05f4a2ae65d3627ea (opens in a new tab)
- github.com/tsparticles/tsparticles/releases/tag/v4.3.1 (opens in a new tab)