{"id":"GHSA-w2cg-vxx6-5xjg","summary":"OpenClaw: denial of service through large base64 media files allocating large buffers before limit checks","details":"## Summary\n\nBase64-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.\n\n## Attack Scenario Notes\n\n- 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.\n- 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.\n\n## Affected Packages / Versions\n\n- openclaw (npm): \u003c= 2026.2.13\n- clawdbot (npm): \u003c= 2026.1.24-3\n\n## Fixed In\n\n- openclaw (npm): 2026.2.14 (planned)\n- clawdbot (npm): no patched release planned; migrate to openclaw\n\n## Fix Commit(s)\n\n- 31791233d60495725fa012745dde8d6ee69e9595\n\n## Credits\nThanks @vincentkoc for reporting.","aliases":["CVE-2026-29612"],"modified":"2026-03-06T01:16:35.474364Z","published":"2026-02-18T00:52:36Z","database_specific":{"cwe_ids":["CWE-400","CWE-770"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-02-18T00:52:36Z","nvd_published_at":"2026-03-05T22:16:24Z"},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-w2cg-vxx6-5xjg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29612"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/31791233d60495725fa012745dde8d6ee69e9595"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.2.14"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-large-base-media-file-decoding"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.14"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-w2cg-vxx6-5xjg/GHSA-w2cg-vxx6-5xjg.json"}},{"package":{"name":"clawdbot","ecosystem":"npm","purl":"pkg:npm/clawdbot"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2026.1.24-3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-w2cg-vxx6-5xjg/GHSA-w2cg-vxx6-5xjg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"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"}]}