CVE-2026-19040

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-08-06. A secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

A flaw has been found in MissionSquad mcp-api up to 1.11.9. The affected element is an unknown function of the file src/services/dcrClients.ts. Executing a manipulation can lead to server-side request forgery. The attack may be performed from remote. Upgrading to version 1.11.10 is sufficient to fix this issue. This patch is called f068ab4ad6f0907ac7001b995588c2673f11a755. You should upgrade the affected component.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 6, 2026

Last Modified

August 12, 2026

Advisory Details (5)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github_pr, github_release.
github_release Patch Available

Release v1.11.10

Patch available: MissionSquad/mcp-api v1.11.10

https://github.com/MissionSquad/mcp-api/releases/tag/v1.11.10
github_pr Patch Available

SSRF via DCR Registration Endpoint in MissionSquad/mcp-api

Patch available: MissionSquad/mcp-api v1.11.10 (PR #45 merged 2026-06-09)

https://github.com/MissionSquad/mcp-api/pull/45
generic

SSRF via DCR Registration Endpoint in MissionSquad/mcp-api · Issue #42 · MissionSquad/mcp-api · GitHub

https://github.com/MissionSquad/mcp-api/issues/42
github_commit Patch Available

commit f068ab4ad6f0 (MissionSquad/mcp-api)

Patch available: MissionSquad/mcp-api v1.11.10 (contains commit f068ab4ad6f0)

https://github.com/MissionSquad/mcp-api/commit/f068ab4ad6f0907ac7001b995588c2673f11a755
generic

GitHub - MissionSquad/mcp-api: MCP Proxy Server. Streaming. Node/Python. OAuth w/ DCR. · GitHub

https://github.com/MissionSquad/mcp-api/

Vendor Advisories for CVE-2026-19040(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 12× in last 7d / 64× 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 156 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-19040?
CVE-2026-19040 is a medium vulnerability published on August 6, 2026. A flaw has been found in MissionSquad mcp-api up to 1.11.9. The affected element is an unknown function of the file src/services/dcrClients.ts. Executing a manipulation can lead to server-side request forgery. The attack may be performed from remote. Upgrading to version 1.11.10 is sufficient to…
When was CVE-2026-19040 disclosed?
CVE-2026-19040 was first published on August 6, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19040 actively exploited?
CVE-2026-19040 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19040?
CVE-2026-19040 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19040?
A fix for CVE-2026-19040 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-19040 are linked in the Vendor Advisories panel on this page.

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