Quick answers
- Is CVE-2026-101881 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-101881 being exploited in the wild.
- How severe is CVE-2026-101881?
- Medium severity, with a CVSS score of 6.5, published 30 September 2026.
- Which products and versions are affected?
- Openclaw Windows Node before 2026.7.1.
- Is there a fix for CVE-2026-101881?
- A patch was published on 2026-07-20: Fix committed to main branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-101881 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-101881?
- Check whether you run Openclaw Windows Node at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An allocation without limits vulnerability exists in the WebSocketClientBase component where multi-frame WebSocket text messages without EndOfMessage markers cause unbounded memory growth in an accumulating StringBuilder. Attackers with network access to connected gateways can send a continuous stream of WebSocket continuation frames to exhaust node memory and crash the process. The fix bounds accumulated inbound messages to 32M UTF-16 characters and closes connections that exceed the limit.
Affected products
- OpenClaw Windows Node before 2026.7.1
Timeline
- 2026-09-30: disclosed
- 2026-07-20: patched: Fix committed to main branch