CVE-2026-61427

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 2026-07-15. 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 before 4.6.78 exposes the MCP HTTP-stream transport without authentication by default: the CLI --api-key option defaults to None, and the server only enforces Authorization/Bearer checks when an API key is configured. When an operator runs 'praisonai mcp serve --transport http-stream' without an API key, an unauthenticated client (no Authorization header, and no Origin header, which is also permitted) can initialize a session, enumerate the available tools (tools/list), and invoke tools (tools/call). Additionally, the dispatcher forwards tool-call arguments to handlers without validating them against the advertised inputSchema. The server binds to 127.0.0.1 by default, so remote exploitation requires the operator to bind to a network-accessible address (e.g., --host 0.0.0.0).

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
31st
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 15, 2026

Last Modified

July 16, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
Patch available. Sources: github.
Web page

PraisonAI before 4.6.78 Authentication Bypass via HTTP-stream | Advisories | VulnCheck

https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-http-stream
GitHub advisoryMentions a patch (unverified)

MCP HTTP-stream transport is unauthenticated by default, exposing tool enumeration and an unvalidated tool-call surface · Advisory · MervinPraison/PraisonAI · GitHub

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hc5v-gxvj-58wh

Vendor Advisories for CVE-2026-61427(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 219 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 119 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% · 31st percentile
  2. 2026-10-13 13:25 UTCEG score recompute
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 31st 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% · 30th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  16. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-10-01 12:42 UTCEG score recompute
  20. 2026-10-01 12:42 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  21. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-09-28 08:47 UTCEG score recompute
  24. 2026-09-28 08:47 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  25. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
Show 75 more
  1. 2026-09-24 08:54 UTCEG score recompute
  2. 2026-09-24 08:54 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  3. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  4. 2026-09-23 03:22 UTCEG score recompute
  5. 2026-09-23 03:22 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  6. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  8. 2026-09-18 04:47 UTCEG score recompute
  9. 2026-09-18 04:47 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-09-14 10:27 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  13. 2026-09-13 23:13 UTCEG score recompute
  14. 2026-09-13 23:13 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  15. 2026-09-13 07:17 UTCEG score recompute
  16. 2026-09-13 07:17 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  17. 2026-09-12 13:05 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  18. 2026-09-11 21:47 UTCEG score recompute
  19. 2026-09-11 21:47 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  20. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  23. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  24. 2026-09-08 00:57 UTCEG score recompute
  25. 2026-09-08 00:57 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  26. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  27. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  28. 2026-09-06 13:29 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  29. 2026-09-05 20:52 UTCEG score recompute
  30. 2026-09-05 20:52 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  31. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  33. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  34. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  35. 2026-08-31 03:59 UTCEG score recompute
  36. 2026-08-31 03:59 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  37. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  38. 2026-08-30 16:05 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  39. 2026-08-30 03:56 UTCEG score recompute
  40. 2026-08-30 03:56 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  42. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  43. 2026-08-27 23:58 UTCEG score recompute
  44. 2026-08-27 23:58 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  45. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  46. 2026-08-27 12:44 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  47. 2026-08-26 23:13 UTCEG score recompute
  48. 2026-08-26 23:13 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  49. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  50. 2026-08-26 07:31 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  51. 2026-08-25 19:03 UTCEG score recompute
  52. 2026-08-25 19:03 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  53. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  54. 2026-08-25 06:48 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  55. 2026-08-24 19:34 UTCEG score recompute
  56. 2026-08-24 19:34 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  57. 2026-08-24 05:33 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  58. 2026-08-23 18:19 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  59. 2026-08-23 07:05 UTCEG score recompute
  60. 2026-08-23 07:05 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  61. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  62. 2026-08-22 19:51 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  63. 2026-08-22 08:37 UTCEG score recompute
  64. 2026-08-22 08:37 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  65. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  66. 2026-08-21 21:23 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  67. 2026-08-21 10:08 UTCEG score recompute
  68. 2026-08-21 10:08 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  69. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  70. 2026-08-20 22:53 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  71. 2026-08-20 11:35 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  72. 2026-08-20 00:18 UTCEG score recompute
  73. 2026-08-20 00:18 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3
  74. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  75. 2026-08-19 08:08 UTCGHSA enrichmentGHSA-5866-9272-qcfv · GitHub CVSS 7.3

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-61427?
CVE-2026-61427 is a high-severity vulnerability; its CVE record was published on July 15, 2026. PraisonAI before 4.6.78 exposes the MCP HTTP-stream transport without authentication by default: the CLI --api-key option defaults to None, and the server only enforces Authorization/Bearer checks when an API key is configured. When an operator runs 'praisonai mcp serve --transport http-stream'…
When was CVE-2026-61427 made public?
CVE-2026-61427 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 15, 2026. EchelonGraph's copy of the record carries a last-modified date of July 16, 2026; the record at its source may have been updated since.
Is CVE-2026-61427 actively exploited?
CVE-2026-61427 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61427?
CVE-2026-61427 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-2026-61427?
A fix for CVE-2026-61427 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-61427 are linked in the Vendor Advisories panel on this page.

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