CVE-2026-29612
MEDIUM5.5EPSS 0.17%OpenClaw: denial of service through large base64 media files allocating large buffers before limit checks
Description
## Summary Base64-backed media inputs could be decoded into Buffers before enforcing decoded-size budgets. An attacker supplying oversized base64 payloads can force large allocations, causing memory pressure and denial of service. ## Attack Scenario Notes - Recommended deployments bind the gateway to loopback by default and require gateway auth for HTTP endpoints. In that configuration, this is best modeled as a local/authorized DoS. - If an operator exposes the gateway to untrusted networks (or disables/weakens auth and rate limits), treat this as a higher-severity network DoS risk. ## Affected Packages / Versions - openclaw (npm): <= 2026.2.13 - clawdbot (npm): <= 2026.1.24-3 ## Fixed In - openclaw (npm): 2026.2.14 (planned) - clawdbot (npm): no patched release planned; migrate to openclaw ## Fix Commit(s) - 31791233d60495725fa012745dde8d6ee69e9595 ## Credits Thanks @vincentkoc for reporting.
Affected packages (2)
- npm/clawdbotfrom 0, <= 2026.1.24-3
- npm/openclawfrom 0, < 2026.2.14
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-29612
- PATCHhttps://github.com/openclaw/openclaw
- WEBhttps://github.com/openclaw/openclaw/commit/31791233d60495725fa012745dde8d6ee69e9595
- WEBhttps://github.com/openclaw/openclaw/releases/tag/v2026.2.14
- WEBhttps://github.com/openclaw/openclaw/security/advisories/GHSA-w2cg-vxx6-5xjg
- WEBhttps://www.vulncheck.com/advisories/openclaw-denial-of-service-via-large-base-media-file-decoding