CVE-2026-56076

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-19. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

PraisonAI before 1.5.128 contains a cross-origin agent execution vulnerability in the AGUI endpoint that allows remote attackers to trigger arbitrary agent execution. The POST /agui endpoint lacks authentication and hardcodes Access-Control-Allow-Origin: * headers, combined with Starlette's Content-Type-agnostic JSON parsing, enabling attackers to bypass CORS preflight checks via simple requests and exfiltrate sensitive agent responses including tool execution results and environment data.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

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
Severity81% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

June 18, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Jun 18, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

PraisonAI - Cross-Origin Agent Execution via Hardcoded Wildcard CORS and Missing Authentication on AGUI Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint
github Patch Available🟡 PoC Available

Cross-Origin Agent Execution via Hardcoded Wildcard CORS and Missing Authentication on AGUI Endpoint · Advisory · MervinPraison/PraisonAI · GitHub

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4

Vendor Advisories for CVE-2026-56076(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 10× in last 7d / 41× 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 245 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-56076?
CVE-2026-56076 is a high vulnerability published on June 18, 2026. PraisonAI before 1.5.128 contains a cross-origin agent execution vulnerability in the AGUI endpoint that allows remote attackers to trigger arbitrary agent execution. The POST /agui endpoint lacks authentication and hardcodes Access-Control-Allow-Origin: * headers, combined with Starlette's…
When was CVE-2026-56076 disclosed?
CVE-2026-56076 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56076 actively exploited?
CVE-2026-56076 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 46.8% of all scored CVEs.
What is the CVSS score of CVE-2026-56076?
CVE-2026-56076 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-56076?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56076, 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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