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
52%
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 20× in last 7d / 105× 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 219 total refreshes for this CVE.

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

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 48.0% 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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