AgenticMail: Unauthenticated inbound mail triggers bypassPermissions resume of the operator's Claude Code session (bridge-wake)
Description
AgenticMail gives AI agents real email addresses and phone numbers. In @agenticmail/claudecode prior to version 0.2.39, @agenticmail/codex prior to version 0.1.33, @agenticmail/core prior to version 0.9.43, and @agenticmail/openclaw prior to version 0.5.71, two inbound-mail handlers act on a privileged effect without verifying that the sender is the operator, while a sibling handler in the same repo does. The higher-impact one: any external email routed to the bridge inbox causes the dispatcher to resume the operator's Claude Code session with permissionMode: 'bypassPermissions', embedding the attacker-controlled from/subject/preview verbatim into the prompt the resumed agent reads — an indirect prompt injection into a fully-privileged agent (Bash/Write/Edit/WebFetch + the agenticmail MCP toolbelt) running as the operator's OAuth identity. The sibling operator-query email-reply hook gates the same untrusted-From provenance with isOperatorReplySender(replyFrom, config.operatorEmail) (fail-closed); the bridge-wake path — a strictly higher-privilege effect — has no equivalent. @agenticmail/claudecode 0.2.39, @agenticmail/codex 0.1.33, @agenticmail/core 0.9.43, and @agenticmail/openclaw 0.5.71 contain a fix.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@agenticmail/corenpm | < 0.9.43 | 0.9.43 |
@agenticmail/claudecodenpm | < 0.2.39 | 0.2.39 |
@agenticmail/codexnpm | < 0.1.33 | 0.1.33 |
@agenticmail/openclawnpm | < 0.5.71 | 0.5.71 |
Affected products
3- Range: <0.2.39
- Range: <0.1.33
- Range: <0.2.39, <0.1.33, <0.9.43, <0.5.71
Patches
Vulnerability mechanics
References
3- github.com/advisories/GHSA-fq4x-789w-jg5hghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-57495ghsaADVISORY
- github.com/agenticmail/agenticmail/security/advisories/GHSA-fq4x-789w-jg5hghsax_refsource_CONFIRMWEB
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