High severity · published Jul 15, 2026
CVE-2026-61436
PraisonAI before 4.6.78 Missing Webhook Signature Verification
8.6
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
PraisonAI · MervinPraison
before 4.6.78 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-61436
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-61436
github.com
https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33
github.com
https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753
github.com
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-7c92-x8vg-4258
www.vulncheck.com
https://www.vulncheck.com/advisories/praisonai-before-missing-webhook-signature-verification
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