PatchSiren cyber security CVE debrief
CVE-2026-61428 PraisonAI CVE debrief
CVE-2026-61428 is a medium-severity vulnerability in PraisonAI AgentMail versions before 4.6.78. The vulnerability allows unauthenticated attackers to inject messages with spoofed sender addresses by exploiting the lack of signature verification in webhook mode. This can lead to arbitrary content being injected into the agent and replies being triggered to attacker-controlled addresses, bypassing sender allow/block lists. Users of PraisonAI AgentMail should be aware of this vulnerability and take steps to mitigate it.
- Vendor
- PraisonAI
- Product
- AgentMail
- CVSS
- MEDIUM 6.9
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-10-07
- Original CVE updated
- 2026-10-07
- Advisory published
- 2026-10-07
- Advisory updated
- 2026-10-07
Who should care
Users of PraisonAI AgentMail versions before 4.6.78 should be aware of this vulnerability and take steps to mitigate it. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review compensating controls for exposed systems while remediation is scheduled and verified.
Technical summary
The vulnerability exists in the webhook mode of PraisonAI AgentMail, where it fails to verify signatures. This allows attackers to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists. The affected product is PraisonAI AgentMail versions before 4.6.78. Defenders should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
Defensive priority
Medium
Recommended defensive actions
- Update PraisonAI AgentMail to version 4.6.78 or later
- Implement additional security measures to verify sender addresses
- Monitor for suspicious activity on the agent
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
Evidence notes
The CVE record was published on 2026-07-11T14:16:22.610Z and has not been modified since then. The NVD entry is currently Received. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The vulnerability exists in webhook mode of PraisonAI AgentMail, where it fails to verify signatures, allowing attackers to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses.
Sources and references
Verified primary and authoritative sources
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CVE-2026-61428 CVE Program record
Publisher, destination, and source semantics verified
URL: https://www.cve.org/CVERecord?id=CVE-2026-61428
CVE Program - Official CVE Program record with source-provided CVE metadata.
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CVE-2026-61428 NVD vulnerability detail
Publisher, destination, and source semantics verified
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-61428
NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.
Supplemental references
-
Source reference
Unverified legacy reference
URL: https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qj9c-59p6-8cgx
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Source reference
Unverified legacy reference
URL: https://www.vulncheck.com/advisories/praisonai-agentmail-before-message-injection-via-webhook
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.