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PatchSiren cyber security CVE debrief

CVE-2026-57495 agenticmail CVE debrief

CVE-2026-57495 is a HIGH-severity vulnerability in AgenticMail's AI agent email and phone number implementation. In @agenticmail/claudecode prior to 0.2.39, @agenticmail/codex prior to 0.1.33, @agenticmail/core prior to 0.9.43, and @agenticmail/openclaw prior to 0.5.71, two inbound-mail handlers allow an external attacker to inject prompts into a privileged agent session. The vulnerability enables attackers to execute unauthorized actions through the agent.

Vendor
agenticmail
Product
@agenticmail/core
CVSS
HIGH 8.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-20
Original CVE updated
2026-07-22
Advisory published
2026-07-20
Advisory updated
2026-07-22

Who should care

Users of AgenticMail's AI agent services, particularly those with high-privilege access, should be aware of this vulnerability and take immediate action to update to the patched versions. Operators of affected systems should review configurations and verify system integrity.

Technical summary

The vulnerability allows an external attacker to inject prompts into a privileged agent session by sending an email to the bridge inbox, which resumes the operator's Claude Code session with elevated permissions. This could lead to unauthorized actions being performed by the agent. The issue affects @agenticmail/claudecode prior to 0.2.39, @agenticmail/codex prior to 0.1.33, @agenticmail/core prior to 0.9.43, and @agenticmail/openclaw prior to 0.5.71.

Defensive priority

High

Recommended defensive actions

  • Update @agenticmail/claudecode to version 0.2.39 or later
  • Update @agenticmail/codex to version 0.1.33 or later
  • Update @agenticmail/core to version 0.9.43 or later
  • Update @agenticmail/openclaw to version 0.5.71 or later
  • Restrict access to the bridge inbox to only trusted senders
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-20T22:17:17.107Z and last modified on 2026-07-22T14:17:22.687Z. The NVD entry is currently in the 'Received' status. Evidence is limited to CVE and NVD data. Defenders should verify operator email and bridge inbox configurations. Limited source detail available.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-57495 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-57495

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-57495 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-57495

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.