CVE-2026-47769

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (40th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-48338 (ENISA EUVD)Source: ENISA EUVD

5.3EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule 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: 0.5%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

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

APIFold reads an OpenAPI 3.x or Swagger 2.x specification and generates a live, production-ready MCP server endpoint. Prior to commit 7f19b52280f414f57af2b79a95333d1c8fbeece5, the /webhooks/:serverSlug/:eventName endpoint accepts arbitrary unauthenticated JSON and stores it in Redis and the webhook_events PostgreSQL table without any signature check or authentication requirement. The root cause is that createWebhookRouter is called at server.ts:188 without a validators map, so receivers.ts:80's optional-chaining guard evaluates to undefined and the signature-validation block (receiver.ts:81–95) is unconditionally skipped. Any unauthenticated network client that knows a valid server slug can inject arbitrary payloads, which are subsequently served as trusted resource state to legitimate MCP clients. Commit 7f19b52280f414f57af2b79a95333d1c8fbeece5 patches the issue.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity53% × 45%
Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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: No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.

EG Severity
5.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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

No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule 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.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: 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 23, 2026

Last Modified

October 24, 2026

Advisory Details (3)

Auto-updated Jul 26, 2026
No fix on record yet. Sources: github_commit, github_pr, github.
GitHub advisoryMentions a patch (unverified)

Unauthenticated Webhook Event Injection · Advisory · Work90210/APIFold · GitHub

https://github.com/Work90210/APIFold/security/advisories/GHSA-x82h-9r8v-m672
GitHub pull request

fix: enforce webhook signature validation (GHSA-x82h-9r8v-m672)

Fix merged in Work90210/APIFold PR #235 on 2026-05-19 — awaiting tagged release

https://github.com/Work90210/APIFold/pull/235
GitHub commit

commit 7f19b52280f4 (Work90210/APIFold)

Fix landed in Work90210/APIFold commit 7f19b52280f4 — awaiting tagged release

https://github.com/Work90210/APIFold/commit/7f19b52280f414f57af2b79a95333d1c8fbeece5

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 39× 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 145 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 45 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-25 14:24 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-10-24 13:34 UTCEG score recompute
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-10-22 23:10 UTCEG score recompute
  15. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-18 03:35 UTCEG score recompute
  21. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
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  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  2. 2026-10-12 16:01 UTCEG score recompute
  3. 2026-10-11 19:44 UTCEG score recompute
  4. 2026-10-11 16:59 UTCEG score recompute
  5. 2026-10-11 14:23 UTCEG score recompute
  6. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  12. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-04 08:20 UTCEG score recompute
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  16. 2026-10-03 03:24 UTCEG score recompute
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-01 06:16 UTCEG score recompute
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  21. 2026-09-28 05:04 UTCEG score recompute
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  24. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  25. 2026-09-24 01:12 UTCEG score recompute
  26. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  27. 2026-09-22 22:42 UTCEG score recompute
  28. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-09-20 01:46 UTCEG score recompute
  30. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  31. 2026-09-18 10:26 UTCEG score recompute
  32. 2026-09-17 09:17 UTCEG score recompute
  33. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  34. 2026-09-16 06:46 UTCEG score recompute
  35. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  36. 2026-09-13 22:22 UTCEG score recompute
  37. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  38. 2026-09-12 17:51 UTCEG score recompute
  39. 2026-09-11 16:43 UTCEG score recompute
  40. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  41. 2026-09-10 15:08 UTCEG score recompute
  42. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  43. 2026-09-09 08:54 UTCEG score recompute
  44. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  45. 2026-09-07 21:29 UTCEG score recompute
  46. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  47. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  48. 2026-09-05 19:27 UTCEG score recompute
  49. 2026-09-04 13:15 UTCEG score recompute
  50. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  51. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  52. 2026-09-01 23:21 UTCEG score recompute
  53. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  54. 2026-08-31 01:38 UTCEG score recompute
  55. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  56. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  57. 2026-08-30 00:30 UTCEG score recompute
  58. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  59. 2026-08-27 14:49 UTCEG score recompute
  60. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  61. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  62. 2026-08-26 13:39 UTCEG score recompute
  63. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  64. 2026-08-25 12:29 UTCEG score recompute
  65. 2026-08-24 11:11 UTCEG score recompute
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  67. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  68. 2026-08-22 08:54 UTCEG score recompute
  69. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
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  72. 2026-08-20 06:38 UTCEG score recompute
  73. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  74. 2026-08-19 05:30 UTCEG score recompute
  75. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile

Frequently asked(5)

What is CVE-2026-47769?
CVE-2026-47769 is a medium-severity vulnerability; its CVE record was published on July 23, 2026. APIFold reads an OpenAPI 3.x or Swagger 2.x specification and generates a live, production-ready MCP server endpoint. Prior to commit 7f19b52280f414f57af2b79a95333d1c8fbeece5, the /webhooks/:serverSlug/:eventName endpoint accepts arbitrary unauthenticated JSON and stores it in Redis and the…
When was the CVE record for CVE-2026-47769 published?
The CVE record for CVE-2026-47769 was published on July 23, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-47769 actively exploited?
CVE-2026-47769 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47769?
CVE-2026-47769 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47769?
No fix for CVE-2026-47769 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix.

Dependency Blast Radius

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