What is CVE-2026-57495?
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.
The record classifies CVE-2026-57495 under weakness class CWE-306. 4 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 77 days ago.
Severity and exploitation probability
- CVSS v4.0 base score
- 8.2 — High (derived from score)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - EPSS (FIRST)
- 0.2% probability of exploitation in the next 30 days, higher than 20.2% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.9/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-07-20
Is CVE-2026-57495 being exploited?
It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.
Affected products and versions
- agenticmail: @agenticmail/core, @agenticmail/claudecode, @agenticmail/codex, @agenticmail/openclaw
Affected software packages:
npm:@agenticmail/core— patched in 0.9.43npm:@agenticmail/claudecode— patched in 0.2.39npm:@agenticmail/codex— patched in 0.1.33npm:@agenticmail/openclaw— patched in 0.5.71
How to fix CVE-2026-57495
Fixed versions are recorded for 4 packages: npm:@agenticmail/core 0.9.43, npm:@agenticmail/claudecode 0.2.39, npm:@agenticmail/codex 0.1.33, npm:@agenticmail/openclaw 0.5.71. No vendor patch reference has been recorded for CVE-2026-57495 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-57495
No threat campaign in the Threadlinqs corpus currently references CVE-2026-57495, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.
Sources
Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.