CVE-2026-85667

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: Elevated riskExposed: 0

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

xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to inject arbitrary messages into the agent pipeline. Attackers can publish malicious messages via the /webhook_worktool handler and exploit unvalidated media URL fetching to perform server-side request forgery against internal services.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
72(Attend)
EG Risk 72/100SSVC: 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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Issue · GitHub

https://github.com/TeamWiseFlow/xiaobei/issues/440
generic

xiaobei through 5.5.2 Unauthenticated Webhook Message Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/xiaobei-through-5.5.2-unauthenticated-webhook-message-injection
generic

xiaobei/awada/awada-server/src/routes/webhook-worktool.ts at v5.5.2 · TeamWiseFlow/xiaobei · GitHub

https://github.com/TeamWiseFlow/xiaobei/blob/v5.5.2/awada/awada-server/src/routes/webhook-worktool.ts
generic

GitHub - TeamWiseFlow/xiaobei: 为OPC/中小微企业量身打造的自媒体获客智能体 · GitHub

https://github.com/TeamWiseFlow/xiaobei

Vendor Advisories for CVE-2026-85667(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 56× in last 7d / 135× 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 135 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85667?
CVE-2026-85667 is a critical vulnerability published on September 4, 2026. xiaobei through 5.5.2 fails to implement authentication or signature validation on webhook endpoints, allowing unauthenticated attackers to inject arbitrary messages into the agent pipeline. Attackers can publish malicious messages via the /webhook_worktool handler and exploit unvalidated media URL…
When was CVE-2026-85667 disclosed?
CVE-2026-85667 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85667 actively exploited?
CVE-2026-85667 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.8% of all scored CVEs.
What is the CVSS score of CVE-2026-85667?
CVE-2026-85667 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-85667?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85667, 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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