CVE-2026-28461
HIGHOpenClaw < 2026.3.1 - Unbounded Memory Growth in Zalo Webhook via Query String Key Churn
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Third Party Advisory third-party-advisory
GitHub Security Advisory (GHSA-wr6m-jg37-68xh)
https://github.com/openclaw/openclaw/security/advisories/GHSA-wr6m-jg37-68xh
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.1 - Unbounded Memory Growth in Zalo Webhook via Query String Key Churn
https://www.vulncheck.com/advisories/openclaw-unbounded-memory-growth-in-zalo-webhook-via-query-string-key-churn
Scores
CVSS v3
7.5
EPSS
0.0035
EPSS Percentile
27.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
OpenClaw/OpenClaw
< 2026.3.1
openclaw/openclaw
< 2026.3.1
Published
Mar 19, 2026
Tracked Since
Mar 19, 2026