CVE-2026-29612
highpriority · track · 30EPSS 0.003 · 21 %ileDEEURUUSEPSS · scored 2026-10-27
OpenClaw versions prior to 2026.2.14 decode base64-backed media inputs into buffers before enforcing decoded-size budget limits, allowing attackers to trigger large memory allocations. Remote attackers can supply oversized base64 payloads to cause memory pressure and denial of service.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.3–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-0424OpenClaw: Mehrere SchwachstellenDeutsch2026-02-15csaf · cert_bundDE
Ein Angreifer kann diese Schwachstellen in OpenClaw ausnutzen, um beliebigen Programmcode auszuführen, sich erhöhte Berechtigungen zu verschaffen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen oder andere, nicht näher bezeichnete Angriffe durchzuführen.
- GHSA-w2cg-vxx6-5xjgOpenClaw: denial of service through large base64 media files allocating large buffers before limit checks2026-02-18ghsa · osvUS
## 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.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclaw/commit/31791233d60495725fa012745dde8d6ee69e9595cnnvd
- https://github.com/openclaw/openclaw/releasesPatchcnnvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-w2cg-vxx6-5xjgcnnvd
- https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-large-base-media-file-decodingcnnvd
- https://github.com/openclaw/openclaw/commit/31791233d60495725fa012745dde8d6ee69e9595enisa_euvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-w2cg-vxx6-5xjgenisa_euvd
- https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-large-base-media-file-decodingenisa_euvd
- https://github.com/openclaw/openclaw/commit/31791233d60495725fa012745dde8d6ee69e9595Patchnvd
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