PT-2026-26226 · Openclaw · Openclaw

Migraine + 1 · Published 2026-03-19 · Updated 2026-03-19 · CVE-2026-28461

NVD

CVSS v3.1

7.5

High

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

OpenClaw versions prior to 2026.3.1 contain an unbounded memory growth vulnerability in the Zalo webhook endpoint that allows unauthenticated attackers to trigger in-memory key accumulation by varying query strings. Remote attackers can exploit this by sending repeated requests with different query parameters to cause memory pressure, process instability, or out-of-memory conditions that degrade service availability.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-28461

Affected Products

Openclaw

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-28461 · Security Note
• https://github.com/openclaw/openclaw/security/advisories/GHSA-wr6m-jg37-68xh · Note
• https://vulncheck.com/advisories/openclaw-unbounded-memory-growth-in-zalo-webhook-via-query-string-key-churn · Note
• https://twitter.com/RedPacketSec/status/2034508372230169046 · Twitter Post