CVE-2026-70609

MEDIUMPre-NVD 5.75.7—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (44th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, the mode option of webContents.openDevTools() was not sanitized before use by the DevTools frontend. If an attacker can influence this value, script under their control may run in the DevTools context, which in unsandboxed configurations has access to Node.js, including when untrusted input reaches the mode argument of openDevTools() or untrusted content calls openDevTools() on a webview it embeds. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.

CVSS v3
5.7
EG Score
5.7MEDIUMmedium confidence
EG Risk
26
EG Risk 26/100CISA 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
Severity57% × 45%
Exploitation1% × 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
0.5%
EPSS %ILE
44th
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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 5, 2026

Last Modified

September 8, 2026

Advisory Details (10)

Auto-updated Aug 5, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

electron v39.8.7

Patch available: electron/electron v39.8.7

https://github.com/electron/electron/releases/tag/v39.8.7
github_commit

commit efc4d3c6b6f1 (electron/electron)

Fix landed in electron/electron commit efc4d3c6b6f1 — awaiting tagged release

https://github.com/electron/electron/commit/efc4d3c6b6f1c04f658ca0d9d2512dcfe78eb7ba
github_commit

commit 969741f9f847 (electron/electron)

Fix landed in electron/electron commit 969741f9f847 — awaiting tagged release

https://github.com/electron/electron/commit/969741f9f847c5c583f6bbc63ca22549dbd954ce
github_commit

commit 2046ae87731d (electron/electron)

Fix landed in electron/electron commit 2046ae87731d — awaiting tagged release

https://github.com/electron/electron/commit/2046ae87731d80a7b535512ae19acb529e10e33b
github_commit

commit 04614eed1798 (electron/electron)

Fix landed in electron/electron commit 04614eed1798 — awaiting tagged release

https://github.com/electron/electron/commit/04614eed17986bddc43eb509ec870424ee6a47d1
github_pr

fix: validate `dock_state_ `against allowlist before JS execution

Fix merged in electron/electron PR #50668 on 2026-04-03 — awaiting tagged release

https://github.com/electron/electron/pull/50668
github_pr

fix: validate `dock_state_ `against allowlist before JS execution

Fix merged in electron/electron PR #50667 on 2026-04-03 — awaiting tagged release

https://github.com/electron/electron/pull/50667
github_pr

fix: validate `dock_state_ `against allowlist before JS execution

Fix merged in electron/electron PR #50666 on 2026-04-03 — awaiting tagged release

https://github.com/electron/electron/pull/50666
github_pr

fix: validate `dock_state_ `against allowlist before JS execution

Fix merged in electron/electron PR #50665 on 2026-04-03 — awaiting tagged release

https://github.com/electron/electron/pull/50665
github Patch Available

DevTools JavaScript Injection via Unsanitized Dock State Parameter · Advisory · electron/electron · GitHub

https://github.com/electron/electron/security/advisories/GHSA-4f78-qhmw-8j8m

Vendor Advisories for CVE-2026-70609(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
electron—
  • every version up to 39.8.7: fixed in 39.8.7
  • 40.0.0-alpha.1 up to 40.9.0: fixed in 40.9.0
  • 41.0.0-alpha.1 up to 41.2.0: fixed in 41.2.0
  • 42.0.0-alpha.1 up to 42.0.0-beta.1: fixed in 42.0.0-beta.1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 44× 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.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 05:59 UTCEG score recompute
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-02 17:56 UTCEPSS rescore
  5. 2026-10-02 09:52 UTCEG score recompute
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-10-01 02:16 UTCEG score recompute
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-29 06:14 UTCEG score recompute
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-27 17:40 UTCEG score recompute
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-25 09:00 UTCEG score recompute
  15. 2026-09-24 09:36 UTCEG score recompute
  16. 2026-09-23 17:54 UTCEPSS rescore
  17. 2026-09-23 10:52 UTCEG score recompute
  18. 2026-09-22 12:01 UTCEG score recompute
  19. 2026-09-21 21:09 UTCEPSS rescore
  20. 2026-09-21 13:15 UTCEG score recompute
  21. 2026-09-20 20:16 UTCEPSS rescore
  22. 2026-09-19 23:14 UTCEG score recompute
  23. 2026-09-18 23:57 UTCEG score recompute
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 01:06 UTCEG score recompute
Show 75 more
  1. 2026-09-17 01:05 UTCEG score recompute
  2. 2026-09-16 14:08 UTCEPSS rescore
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 16:16 UTCEG score recompute
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-14 14:04 UTCEG score recompute
  7. 2026-09-12 16:30 UTCEG score recompute
  8. 2026-09-12 15:02 UTCEPSS rescore
  9. 2026-09-11 17:45 UTCEG score recompute
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-10 18:43 UTCEG score recompute
  12. 2026-09-10 09:35 UTCEPSS rescore
  13. 2026-09-09 19:45 UTCEG score recompute
  14. 2026-09-08 22:01 UTCEPSS rescore
  15. 2026-09-07 18:13 UTCEG score recompute
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-06 06:58 UTCEG score recompute
  19. 2026-09-05 15:31 UTCEPSS rescore
  20. 2026-09-05 08:14 UTCEG score recompute
  21. 2026-09-04 09:30 UTCEG score recompute
  22. 2026-09-04 05:07 UTCEPSS rescore
  23. 2026-09-03 06:46 UTCEG score recompute
  24. 2026-09-02 14:12 UTCEPSS rescore
  25. 2026-09-01 22:10 UTCEG score recompute
  26. 2026-09-01 13:54 UTCEPSS rescore
  27. 2026-09-01 04:40 UTCEPSS rescore
  28. 2026-08-30 20:05 UTCEG score recompute
  29. 2026-08-30 19:17 UTCEPSS rescore
  30. 2026-08-30 01:22 UTCEPSS rescore
  31. 2026-08-29 21:21 UTCEG score recompute
  32. 2026-08-28 21:42 UTCEPSS rescore
  33. 2026-08-28 00:55 UTCEG score recompute
  34. 2026-08-27 01:44 UTCEG score recompute
  35. 2026-08-26 14:47 UTCEPSS rescore
  36. 2026-08-26 02:59 UTCEG score recompute
  37. 2026-08-25 13:49 UTCEPSS rescore
  38. 2026-08-25 04:14 UTCEG score recompute
  39. 2026-08-23 06:43 UTCEG score recompute
  40. 2026-08-23 00:19 UTCEPSS rescore
  41. 2026-08-22 07:59 UTCEG score recompute
  42. 2026-08-21 23:49 UTCEPSS rescore
  43. 2026-08-21 09:14 UTCEG score recompute
  44. 2026-08-20 22:56 UTCEPSS rescore
  45. 2026-08-20 10:29 UTCEG score recompute
  46. 2026-08-19 17:04 UTCEPSS rescore
  47. 2026-08-19 11:45 UTCEG score recompute
  48. 2026-08-18 13:49 UTCEPSS rescore
  49. 2026-08-18 13:49 UTCEPSS rescore
  50. 2026-08-17 14:15 UTCEG score recompute
  51. 2026-08-17 13:47 UTCEPSS rescore
  52. 2026-08-16 15:31 UTCEG score recompute
  53. 2026-08-16 14:56 UTCEPSS rescore
  54. 2026-08-16 14:56 UTCEPSS rescore
  55. 2026-08-16 02:15 UTCEPSS rescore
  56. 2026-08-15 16:47 UTCEG score recompute
  57. 2026-08-15 01:31 UTCEPSS rescore
  58. 2026-08-14 18:02 UTCEG score recompute
  59. 2026-08-13 22:00 UTCEPSS rescore
  60. 2026-08-12 20:34 UTCEG score recompute
  61. 2026-08-12 13:51 UTCEPSS rescore
  62. 2026-08-11 21:50 UTCEG score recompute
  63. 2026-08-11 00:00 UTCEPSS rescore
  64. 2026-08-10 00:22 UTCEG score recompute
  65. 2026-08-09 13:47 UTCEPSS rescore
  66. 2026-08-09 01:38 UTCEG score recompute
  67. 2026-08-08 16:37 UTCEPSS rescore
  68. 2026-08-08 02:53 UTCEG score recompute
  69. 2026-08-07 04:09 UTCEG score recompute
  70. 2026-08-06 13:47 UTCEPSS rescore
  71. 2026-08-06 05:25 UTCEG score recompute
  72. 2026-08-06 04:25 UTCEG score recompute
  73. 2026-08-05 18:30 UTCEG score recompute
  74. 2026-08-05 17:56 UTCEG score recompute
  75. 2026-08-05 17:55 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-70609?
CVE-2026-70609 is a medium vulnerability published on August 5, 2026. Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, the mode option of webContents.openDevTools() was not sanitized before use by the DevTools frontend. If an attacker can influence this value,…
When was CVE-2026-70609 disclosed?
CVE-2026-70609 was first published on August 5, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70609 actively exploited?
CVE-2026-70609 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70609?
CVE-2026-70609 has a CVSS base score of 5.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70609?
A fix for CVE-2026-70609 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70609 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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