CVE-2026-61436

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.6
EG Score
8.6(high)
EG Risk
70(Attend)
EG Risk 70/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 15, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
generic

PraisonAI before 4.6.78 Missing Webhook Signature Verification | Advisories | VulnCheck

https://www.vulncheck.com/advisories/praisonai-before-missing-webhook-signature-verification
github Patch Available🟡 PoC Available

AgentMail webhook mode accepts forged unsigned message.received events and invokes agents · Advisory · MervinPraison/PraisonAI · GitHub

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-7c92-x8vg-4258
github_commit Patch Available

commit 846568c7a5d8 (MervinPraison/PraisonAI)

Patch available: MervinPraison/PraisonAI v4.6.118 (contains commit 846568c7a5d8)

https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753
github_commit Patch Available

commit 2a855c470077 (MervinPraison/PraisonAI)

Patch available: MervinPraison/PraisonAI v4.6.118 (contains commit 2a855c470077)

https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33

Vendor Advisories for CVE-2026-61436(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 27× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-31 20:56 UTCGHSA enrichment
  2. 2026-07-31 09:17 UTCGHSA enrichment
  3. 2026-07-30 21:41 UTCEG score recompute
  4. 2026-07-30 21:41 UTCGHSA enrichment
  5. 2026-07-30 16:28 UTCEPSS rescore
  6. 2026-07-30 09:15 UTCEG score recompute
  7. 2026-07-30 09:15 UTCGHSA enrichment
  8. 2026-07-30 01:30 UTCEPSS rescore
  9. 2026-07-30 01:30 UTCEPSS rescore
  10. 2026-07-29 21:39 UTCGHSA enrichment
  11. 2026-07-29 10:01 UTCGHSA enrichment
  12. 2026-07-28 22:25 UTCEG score recompute
  13. 2026-07-28 22:25 UTCGHSA enrichment
  14. 2026-07-28 15:37 UTCEPSS rescore
  15. 2026-07-28 10:29 UTCGHSA enrichment
  16. 2026-07-27 22:53 UTCEG score recompute
  17. 2026-07-27 22:53 UTCGHSA enrichment
  18. 2026-07-27 14:14 UTCEPSS rescore
  19. 2026-07-27 10:51 UTCGHSA enrichment
  20. 2026-07-26 23:14 UTCEG score recompute
  21. 2026-07-26 23:14 UTCGHSA enrichment
  22. 2026-07-26 14:54 UTCEPSS rescore
  23. 2026-07-26 14:54 UTCEPSS rescore
  24. 2026-07-26 11:38 UTCEG score recompute
  25. 2026-07-26 11:38 UTCGHSA enrichment
Show 21 more
  1. 2026-07-25 14:18 UTCEPSS rescore
  2. 2026-07-25 14:18 UTCEPSS rescore
  3. 2026-07-24 14:18 UTCEPSS rescore
  4. 2026-07-24 14:18 UTCEPSS rescore
  5. 2026-07-23 14:18 UTCEPSS rescore
  6. 2026-07-23 14:18 UTCEPSS rescore
  7. 2026-07-23 03:21 UTCEG score recompute
  8. 2026-07-22 14:08 UTCEPSS rescore
  9. 2026-07-22 14:08 UTCEPSS rescore
  10. 2026-07-21 15:25 UTCEPSS rescore
  11. 2026-07-21 15:25 UTCEPSS rescore
  12. 2026-07-20 17:08 UTCEPSS rescore
  13. 2026-07-19 14:31 UTCEPSS rescore
  14. 2026-07-19 02:29 UTCEPSS rescore
  15. 2026-07-18 10:04 UTCEPSS rescore
  16. 2026-07-16 22:43 UTCGHSA enrichment
  17. 2026-07-16 17:03 UTCEPSS rescore
  18. 2026-07-16 11:07 UTCGHSA enrichment
  19. 2026-07-15 23:31 UTCGHSA enrichment
  20. 2026-07-15 11:55 UTCEG score recompute
  21. 2026-07-15 11:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-61436?
CVE-2026-61436 is a high vulnerability published on July 15, 2026. 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…
When was CVE-2026-61436 disclosed?
CVE-2026-61436 was first published in the National Vulnerability Database on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-61436 actively exploited?
CVE-2026-61436 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.7% of all scored CVEs.
What is the CVSS score of CVE-2026-61436?
CVE-2026-61436 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-61436?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61436, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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