AI agent vulnerability · OpenClaw

CVE-2026-35633: OpenClaw: Remote media error responses could trigger unbounded memory allocation before failure

highCVSS 4.0 8.2GHSA-4qwc-c7g9-4xcw

Summary Remote media HTTP error bodies were read without a hard size cap before failure handling, allowing unbounded allocation on error responses. Affected Packages / Versions - Package: openclaw (npm) - Affected: = 2026.3.22 - Latest released tag checked: v2026.3.23-2 (630f1479c44f78484dfa21bb407cbe6f171dac87) - Latest published npm version checked: 2026.3.23-2 Fix Commit(s) -…

Published Mar 26, 2026 · Updated Jul 1, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: < 2026.3.22
Fixed in: 2026.3.22
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Summary

Remote media HTTP error bodies were read without a hard size cap before failure handling, allowing unbounded allocation on error responses.

Affected Packages / Versions

Package: openclaw (npm)
Affected: < 2026.3.22
Fixed: >= 2026.3.22
Latest released tag checked: v2026.3.23-2 (630f1479c44f78484dfa21bb407cbe6f171dac87)
Latest published npm version checked: 2026.3.23-2

Fix Commit(s)

81445a901091a5d27ef0b56fceedbe4724566438

Release Status

The fix shipped in v2026.3.22 and remains present in v2026.3.23 and v2026.3.23-2.

Code-Level Confirmation

src/media/fetch.ts now routes non-2xx failures through bounded prefix reads instead of buffering the whole error body.
src/media/read-response-with-limit.ts enforces capped reads and truncates oversized snippets before surfacing failure text.

OpenClaw thanks @YLChen-007 for reporting.

Credited to YLChen-007.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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