CVE-2026-61436 · GHSA-7c92-x8vg-4258
PraisonAI: AgentMail webhook mode accepts forged unsigned message.received events and invokes agents
- Risk score
- 66/100
- CVSS
- 8.6 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 15 Jul 2026
Open in the live forecast Today's forecast
What to know
- What it is
- PraisonAI before 4.6.78 fails to verify Svix webhook signatures in AgentMail webhook mode, allowing unauthenticated attackers to forge message.received events. Attackers can send crafted JSON payloads to the webhook endpoint to invoke configured agents with arbitrary sender addresses and message content.
- Affected
- praisonai (pip) <= 4.6.77
- Fix
- Upgrade praisonai to 4.6.78 or later.
- Exploitation
- No known exploitation
Story map
At a glance
praisonai: Amber, patch this week. The AICoder UI component exposes write_to_file and execute_command tools to the LLM with no path validation and no command sanitization. An attacker can achieve arbitrary file write to any location on the filesystem (including /root/.ssh/authorized_keys, /etc/crontab) and arbitrary command execution through prompt inj…
The flaws
- CVE-2026-61436: PraisonAI: AgentMail webhook mode accepts forged unsigned message.received events and invokes agents (CVSS 8.6 · EPSS 0%)
- CVE-2026-61445: PraisonAI: AICoder Arbitrary File Write and Command Execution via LLM Tool Calls (CVSS 9.9 · EPSS 1%)
- CVE-2026-61426: PraisonAI: AgentOS defaults to network-exposed no-auth mode, allowing unauthenticated agent invocation and instruction disclosure (CVSS 8.6 · EPSS 0%)
- CVE-2026-61435: PraisonAI: Call API localhost-only authentication bypass via spoofed Host header (CVSS 8.2 · EPSS 1%)
The fix
Upgrade praisonai: 4.6.78 or later on your release line
Who is exposed: praisonai (pip) <= 4.6.77
Where it stands
- Public proof of concept
Connects to
- Same weakness: Authentication bypass (CWE-287). 236 other warnings in 30 days
Why it is Amber
- CVSS 8.6 high
- Remotely exploitable without logging in
- On your watchlist: PyPI
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| praisonai | pip | <= 4.6.77 | 4.6.78 |
References
- https://github.com/advisories/GHSA-7c92-x8vg-4258
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-7c92-x8vg-4258
- https://nvd.nist.gov/vuln/detail/CVE-2026-61436
- https://nvd.nist.gov/vuln/detail/CVE-2026-62172
- https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33
- https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753
- https://www.vulncheck.com/advisories/praisonai-before-missing-webhook-signature-verification
- https://github.com/advisories/GHSA-7c92-x8vg-4258
Original description
PraisonAI before 4.6.78 fails to verify Svix webhook signatures in AgentMail webhook mode, allowing unauthenticated attackers to forge message.received events. Attackers can send crafted JSON payloads to the webhook endpoint to invoke configured agents with arbitrary sender addresses and message content.
Last activity 7 Oct 2026. Patch Forecast updates every hour.