Medium
PraisonAI AgentMail before 4.6.78 Message Injection via Webhook
Type: advisorySources: OSV
PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-61428
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 03:50 UTC · Revision 1
Source evidence
PraisonAI AgentMail before 4.6.78 Message Injection via Webhook
core-osv · Original sourcePublished 11 Jul 2026, 13:01 UTC
PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists.
osv:CVE-2026-61428
Complete source record
{
"id": "7feedc2f394fdc10490dea334c4cebc26a5b0831b6b13722d79671e3c4967037",
"url": "https://osv.dev/vulnerability/CVE-2026-61428",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "PraisonAI AgentMail before 4.6.78 Message Injection via Webhook",
"summary": "PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists.",
"evidence": "osv:CVE-2026-61428",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-61428",
"aliases": [
"CVE-2026-61428",
"GHSA-qj9c-59p6-8cgx",
"PYSEC-2026-4259"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mervinpraison/praisonai",
"type": "GIT",
"events": [
{
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},
{
"fixed": "393de394087e3badc79acfec490323bcc99638bd"
}
],
"database_specific": {
"extracted_events": [
{
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{
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},
{
"fixed": "4.6.78"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
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{
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"source": "DESCRIPTION"
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"database_specific": {
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}
}
],
"modified": "2026-10-28T02:30:32.831121223Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61428.json",
"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qj9c-59p6-8cgx",
"https://nvd.nist.gov/vuln/detail/CVE-2026-61428",
"https://www.vulncheck.com/advisories/praisonai-agentmail-before-message-injection-via-webhook"
],
"provider_metadata": {
"cwe_ids": [
"CWE-290"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61428.json"
}
},
"related_cves": [
{
"value": "CVE-2026-61428",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 500114,
"published_at": "2026-07-11T13:01:01.759+00:00"
}