CVE-2026-78430

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

Score 5.3 from GitHub Security Advisory (severity: LOW) published 2026-08-24. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this weekElevated
5.3EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (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: 1.1%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.

A vulnerability was detected in sworddut mcp-ffmpeg-helper 0.1.0/0.1.1/0.2.1. This affects the function handleToolCall of the file src/tools/handlers.ts of the component Tool Handler. The manipulation of the argument format results in os command injection. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (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. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
1.1%
EPSS %ILE
64th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

August 24, 2026

Last Modified

October 12, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
No fix on record yet.
Web page

GitHub - sworddut/mcp-ffmpeg-helper: 一个基于 Model Context Protocol (MCP) 的 FFmpeg 辅助工具，提供视频处理功能。 · GitHub

https://github.com/sworddut/mcp-ffmpeg-helper/
Web page

Security: OS command injection via unsanitized tool arguments in runFFmpegCommand (shell:true) · Issue #6 · sworddut/mcp-ffmpeg-helper · GitHub

https://github.com/sworddut/mcp-ffmpeg-helper/issues/6

Vendor Advisories for CVE-2026-78430(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 83× 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 98 of 141 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 43 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  3. 2026-10-12 15:28 UTCEG score recompute
  4. 2026-10-12 15:28 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  5. 2026-10-12 15:25 UTCNVD updateCVSS v4 → 1.9
  6. 2026-10-11 19:22 UTCEG score recompute
  7. 2026-10-11 16:38 UTCEG score recompute
  8. 2026-10-11 13:57 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  11. 2026-10-10 12:30 UTCEG score recompute
  12. 2026-10-10 12:30 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  14. 2026-10-09 04:41 UTCEG score recompute
  15. 2026-10-09 04:41 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  17. 2026-10-08 03:50 UTCEG score recompute
  18. 2026-10-08 03:50 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  20. 2026-10-07 01:11 UTCEG score recompute
  21. 2026-10-07 01:11 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  22. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  23. 2026-10-06 02:46 UTCEG score recompute
  24. 2026-10-06 02:46 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  25. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.1% · 64th percentile
Show 73 more
  1. 2026-10-05 01:26 UTCEG score recompute
  2. 2026-10-05 01:26 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  3. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  4. 2026-10-04 02:18 UTCEG score recompute
  5. 2026-10-04 02:18 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  6. 2026-10-03 14:26 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  7. 2026-10-03 01:35 UTCEG score recompute
  8. 2026-10-03 01:35 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  9. 2026-10-02 03:40 UTCEG score recompute
  10. 2026-10-02 03:40 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  11. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  12. 2026-10-01 05:37 UTCEG score recompute
  13. 2026-10-01 05:37 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  14. 2026-09-30 06:59 UTCEG score recompute
  15. 2026-09-30 06:59 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  16. 2026-09-29 15:24 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  17. 2026-09-28 21:32 UTCEG score recompute
  18. 2026-09-28 21:32 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  19. 2026-09-28 13:52 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  20. 2026-09-27 20:13 UTCEG score recompute
  21. 2026-09-27 20:13 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  23. 2026-09-26 22:18 UTCEG score recompute
  24. 2026-09-26 22:17 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  25. 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  26. 2026-09-26 00:28 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  27. 2026-09-25 14:46 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  28. 2026-09-24 15:53 UTCEG score recompute
  29. 2026-09-24 15:53 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  30. 2026-09-24 14:04 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  31. 2026-09-23 17:57 UTCEG score recompute
  32. 2026-09-23 17:56 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  33. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  34. 2026-09-22 19:31 UTCEG score recompute
  35. 2026-09-22 19:31 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  36. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  37. 2026-09-21 21:35 UTCEG score recompute
  38. 2026-09-21 21:35 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  39. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  40. 2026-09-20 23:38 UTCEG score recompute
  41. 2026-09-20 23:38 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  42. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  43. 2026-09-20 01:41 UTCEG score recompute
  44. 2026-09-20 01:41 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  45. 2026-09-19 03:45 UTCEG score recompute
  46. 2026-09-19 03:45 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  47. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  48. 2026-09-18 05:50 UTCEG score recompute
  49. 2026-09-18 05:50 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  50. 2026-09-17 07:55 UTCEG score recompute
  51. 2026-09-17 07:55 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  52. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  53. 2026-09-16 10:00 UTCEG score recompute
  54. 2026-09-16 10:00 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  55. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  56. 2026-09-15 12:04 UTCEG score recompute
  57. 2026-09-15 12:04 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  58. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  59. 2026-09-14 14:08 UTCEG score recompute
  60. 2026-09-14 14:08 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  61. 2026-09-13 16:13 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  62. 2026-09-12 18:18 UTCEG score recompute
  63. 2026-09-12 18:18 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  64. 2026-09-11 20:22 UTCEG score recompute
  65. 2026-09-11 20:22 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  66. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  67. 2026-09-10 22:26 UTCEG score recompute
  68. 2026-09-10 22:26 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  69. 2026-09-10 00:31 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  70. 2026-09-09 01:21 UTCEG score recompute
  71. 2026-09-09 01:21 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3
  72. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  73. 2026-09-07 15:20 UTCGHSA enrichmentGHSA-w4rf-x2r6-4q2w · GitHub severity LOW · GitHub CVSS 5.3

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Frequently asked(5)

What is CVE-2026-78430?
CVE-2026-78430 is a medium-severity vulnerability; its CVE record was published on August 24, 2026. A vulnerability was detected in sworddut mcp-ffmpeg-helper 0.1.0/0.1.1/0.2.1. This affects the function handleToolCall of the file src/tools/handlers.ts of the component Tool Handler. The manipulation of the argument format results in os command injection. Attacking locally is a requirement. The…
When was the CVE record for CVE-2026-78430 published?
The CVE record for CVE-2026-78430 was published on August 24, 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 12, 2026; the record at its source may have been updated since.
Is CVE-2026-78430 actively exploited?
CVE-2026-78430 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (64th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-78430?
CVE-2026-78430 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-2026-78430?
No fix for CVE-2026-78430 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-78430 are linked in the Vendor Advisories panel on this page.

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