CVE-2026-61436

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM 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: 1%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(medium)
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
1%
EPSS %ILE
42%
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 23× in last 7d / 111× 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.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-08-30 03:55 UTCEG score recompute
  2. 2026-08-30 03:55 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-28 01:52 UTCEG score recompute
  6. 2026-08-28 01:52 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 12:44 UTCGHSA enrichment
  9. 2026-08-26 23:43 UTCEG score recompute
  10. 2026-08-26 23:43 UTCGHSA enrichment
  11. 2026-08-26 14:46 UTCEPSS rescore
  12. 2026-08-26 12:01 UTCGHSA enrichment
  13. 2026-08-25 21:06 UTCEG score recompute
  14. 2026-08-25 21:06 UTCGHSA enrichment
  15. 2026-08-25 13:49 UTCEPSS rescore
  16. 2026-08-25 09:18 UTCGHSA enrichment
  17. 2026-08-24 21:43 UTCEG score recompute
  18. 2026-08-24 21:43 UTCGHSA enrichment
  19. 2026-08-24 09:39 UTCEG score recompute
  20. 2026-08-24 09:39 UTCGHSA enrichment
  21. 2026-08-23 22:02 UTCGHSA enrichment
  22. 2026-08-23 10:25 UTCEG score recompute
  23. 2026-08-23 10:25 UTCGHSA enrichment
  24. 2026-08-23 00:19 UTCEPSS rescore
  25. 2026-08-22 22:36 UTCGHSA enrichment
Show 75 more
  1. 2026-08-22 10:59 UTCEG score recompute
  2. 2026-08-22 10:59 UTCGHSA enrichment
  3. 2026-08-21 23:49 UTCEPSS rescore
  4. 2026-08-21 23:23 UTCGHSA enrichment
  5. 2026-08-21 11:47 UTCGHSA enrichment
  6. 2026-08-20 23:53 UTCEG score recompute
  7. 2026-08-20 23:53 UTCGHSA enrichment
  8. 2026-08-20 22:55 UTCEPSS rescore
  9. 2026-08-20 12:16 UTCGHSA enrichment
  10. 2026-08-20 00:18 UTCEG score recompute
  11. 2026-08-20 00:18 UTCGHSA enrichment
  12. 2026-08-19 17:04 UTCEPSS rescore
  13. 2026-08-19 09:30 UTCGHSA enrichment
  14. 2026-08-18 21:54 UTCEG score recompute
  15. 2026-08-18 21:54 UTCGHSA enrichment
  16. 2026-08-18 13:48 UTCEPSS rescore
  17. 2026-08-18 09:40 UTCGHSA enrichment
  18. 2026-08-17 21:24 UTCEG score recompute
  19. 2026-08-17 21:24 UTCGHSA enrichment
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 09:04 UTCGHSA enrichment
  22. 2026-08-16 21:29 UTCEG score recompute
  23. 2026-08-16 21:29 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 09:53 UTCEG score recompute
  26. 2026-08-16 09:53 UTCGHSA enrichment
  27. 2026-08-15 22:18 UTCGHSA enrichment
  28. 2026-08-15 10:42 UTCEG score recompute
  29. 2026-08-15 10:42 UTCGHSA enrichment
  30. 2026-08-15 01:30 UTCEPSS rescore
  31. 2026-08-14 23:06 UTCEG score recompute
  32. 2026-08-14 23:06 UTCGHSA enrichment
  33. 2026-08-14 11:30 UTCGHSA enrichment
  34. 2026-08-13 23:55 UTCEG score recompute
  35. 2026-08-13 23:55 UTCGHSA enrichment
  36. 2026-08-13 22:00 UTCEPSS rescore
  37. 2026-08-13 12:19 UTCGHSA enrichment
  38. 2026-08-13 00:43 UTCEG score recompute
  39. 2026-08-13 00:43 UTCGHSA enrichment
  40. 2026-08-12 13:51 UTCEPSS rescore
  41. 2026-08-12 13:08 UTCGHSA enrichment
  42. 2026-08-12 01:32 UTCGHSA enrichment
  43. 2026-08-11 13:56 UTCEG score recompute
  44. 2026-08-11 13:56 UTCGHSA enrichment
  45. 2026-08-11 02:20 UTCEG score recompute
  46. 2026-08-11 02:20 UTCGHSA enrichment
  47. 2026-08-11 00:00 UTCEPSS rescore
  48. 2026-08-10 14:45 UTCGHSA enrichment
  49. 2026-08-10 03:09 UTCGHSA enrichment
  50. 2026-08-09 15:33 UTCEG score recompute
  51. 2026-08-09 15:33 UTCGHSA enrichment
  52. 2026-08-09 13:47 UTCEPSS rescore
  53. 2026-08-09 03:58 UTCEG score recompute
  54. 2026-08-09 03:58 UTCGHSA enrichment
  55. 2026-08-08 16:37 UTCEPSS rescore
  56. 2026-08-08 16:22 UTCGHSA enrichment
  57. 2026-08-08 04:46 UTCGHSA enrichment
  58. 2026-08-07 17:11 UTCEG score recompute
  59. 2026-08-07 17:11 UTCGHSA enrichment
  60. 2026-08-07 05:35 UTCGHSA enrichment
  61. 2026-08-06 17:59 UTCEG score recompute
  62. 2026-08-06 17:59 UTCGHSA enrichment
  63. 2026-08-06 13:47 UTCEPSS rescore
  64. 2026-08-06 06:23 UTCEG score recompute
  65. 2026-08-06 06:23 UTCGHSA enrichment
  66. 2026-08-05 19:17 UTCEPSS rescore
  67. 2026-08-05 19:17 UTCEPSS rescore
  68. 2026-08-05 18:47 UTCGHSA enrichment
  69. 2026-08-05 07:11 UTCGHSA enrichment
  70. 2026-08-04 19:34 UTCEG score recompute
  71. 2026-08-04 19:34 UTCGHSA enrichment
  72. 2026-08-04 15:10 UTCEPSS rescore
  73. 2026-08-04 10:39 UTCEPSS rescore
  74. 2026-08-04 07:58 UTCGHSA enrichment
  75. 2026-08-03 18:31 UTCGHSA enrichment

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 1% probability of exploitation in the next 30 days, which ranks it in the top 58.2% 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.

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