CVE-2026-61428

HIGHPre-NVD 7.37.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.3 from GitHub Security Advisory published 2026-07-11. A secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
7.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.3
EG Score
7.3HIGHmedium confidence
EG Risk
64
EG Risk 64/100

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 (value × EchelonGraph’s weight)
Severity73% × 45%
The EG Score, 7.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 11, 2026

Last Modified

July 13, 2026

Advisory Details (2)

Auto-updated Jul 11, 2026
Patch available. Sources: github.
Web page

PraisonAI AgentMail before 4.6.78 Message Injection via Webhook | Advisories | VulnCheck

https://www.vulncheck.com/advisories/praisonai-agentmail-before-message-injection-via-webhook
GitHub advisoryMentions a patch (unverified)

AgentMail webhook lacks signature verification, allowing unauthenticated message injection and sender spoofing · Advisory · MervinPraison/PraisonAI · GitHub

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qj9c-59p6-8cgx

Vendor Advisories for CVE-2026-61428(1)

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

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
praisonai0.0.1 ... 4.6.9 (763 versions)
  • every version up to 4.6.78: fixed in 4.6.78
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 36× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 222 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 122 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  2. 2026-10-13 13:25 UTCEG score recompute
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-10-12 15:50 UTCEG score recompute
  5. 2026-10-11 19:34 UTCEG score recompute
  6. 2026-10-11 16:49 UTCEG score recompute
  7. 2026-10-11 14:11 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  16. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  17. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  19. 2026-10-01 14:53 UTCEG score recompute
  20. 2026-10-01 14:53 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  21. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  23. 2026-09-28 09:41 UTCEG score recompute
  24. 2026-09-28 09:41 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  25. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 28th percentile
Show 75 more
  1. 2026-09-24 10:28 UTCEG score recompute
  2. 2026-09-24 10:28 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  3. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  4. 2026-09-23 05:40 UTCEG score recompute
  5. 2026-09-23 05:40 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  6. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  7. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  8. 2026-09-18 05:11 UTCEG score recompute
  9. 2026-09-18 05:11 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-09-13 23:37 UTCEG score recompute
  13. 2026-09-13 23:37 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  14. 2026-09-13 08:07 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  15. 2026-09-12 15:22 UTCEG score recompute
  16. 2026-09-12 15:22 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  17. 2026-09-12 02:21 UTCEG score recompute
  18. 2026-09-12 02:21 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  19. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-09-08 02:24 UTCEG score recompute
  24. 2026-09-08 02:24 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  25. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  26. 2026-09-06 13:54 UTCEG score recompute
  27. 2026-09-06 13:54 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  28. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  29. 2026-09-05 21:35 UTCEG score recompute
  30. 2026-09-05 21:35 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  31. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  32. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  33. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  34. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  35. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  36. 2026-08-30 18:54 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  37. 2026-08-30 05:54 UTCEG score recompute
  38. 2026-08-30 05:54 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  39. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  40. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  41. 2026-08-27 21:38 UTCEG score recompute
  42. 2026-08-27 21:38 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  43. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  44. 2026-08-27 00:21 UTCEG score recompute
  45. 2026-08-27 00:21 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  46. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  47. 2026-08-26 02:44 UTCEG score recompute
  48. 2026-08-26 02:44 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  49. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  50. 2026-08-25 13:03 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  51. 2026-08-24 23:52 UTCEG score recompute
  52. 2026-08-24 23:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  53. 2026-08-24 10:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  54. 2026-08-23 21:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  55. 2026-08-23 08:52 UTCEG score recompute
  56. 2026-08-23 08:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  57. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  58. 2026-08-22 19:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  59. 2026-08-22 06:52 UTCEG score recompute
  60. 2026-08-22 06:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  61. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  62. 2026-08-21 17:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  63. 2026-08-21 04:52 UTCEG score recompute
  64. 2026-08-21 04:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  65. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  66. 2026-08-20 15:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  67. 2026-08-20 02:52 UTCEG score recompute
  68. 2026-08-20 02:52 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  69. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  70. 2026-08-19 13:43 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  71. 2026-08-19 00:42 UTCEG score recompute
  72. 2026-08-19 00:42 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  73. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  74. 2026-08-18 11:26 UTCGHSA enrichmentGHSA-4mp6-8448-9vgv · GitHub CVSS 7.3
  75. 2026-08-17 22:03 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-61428?
CVE-2026-61428 is a high-severity vulnerability; its CVE record was published on July 11, 2026. 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…
When was CVE-2026-61428 made public?
CVE-2026-61428 was made public on June 25, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 11, 2026. EchelonGraph's copy of the record carries a last-modified date of July 13, 2026; the record at its source may have been updated since.
Is CVE-2026-61428 actively exploited?
CVE-2026-61428 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61428?
CVE-2026-61428 has a CVSS base score of 7.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-61428?
A fix for CVE-2026-61428 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-61428 are linked in the Vendor Advisories panel on this page.

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