CVE-2026-70608

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. 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
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

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

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.

CVSS v3
7.2
EG Score
7.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity72% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 5, 2026

Advisory Details (10)

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

electron v42.0.1

Patch available: electron/electron v42.0.1

https://github.com/electron/electron/releases/tag/v42.0.1
github_release Patch Available

electron v41.10.3

Patch available: electron/electron v41.10.3

https://github.com/electron/electron/releases/tag/v41.10.3
github_release Patch Available

electron v39.8.10

Patch available: electron/electron v39.8.10

https://github.com/electron/electron/releases/tag/v39.8.10
github_commit

commit 68cf8b7d9122 (electron/electron)

Fix landed in electron/electron commit 68cf8b7d9122 — awaiting tagged release

https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f
github_commit

commit 57cbe329c4ae (electron/electron)

Fix landed in electron/electron commit 57cbe329c4ae — awaiting tagged release

https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3
github_commit

commit 3ff23c52ab36 (electron/electron)

Fix landed in electron/electron commit 3ff23c52ab36 — awaiting tagged release

https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57
github_pr

fix: respect iframe sandbox flags on the OpenURL navigation path

Fix merged in electron/electron PR #51439 on 2026-05-05 — awaiting tagged release

https://github.com/electron/electron/pull/51439
github_pr

fix: respect iframe sandbox flags on the OpenURL navigation path

Fix merged in electron/electron PR #51438 on 2026-07-16 — awaiting tagged release

https://github.com/electron/electron/pull/51438
github_pr

fix: respect iframe sandbox flags on the OpenURL navigation path

Fix merged in electron/electron PR #51437 on 2026-05-05 — awaiting tagged release

https://github.com/electron/electron/pull/51437
github Patch Available

Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path · Advisory · electron/electron · GitHub

https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g

Vendor Advisories for CVE-2026-70608(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 rangeFixed inDependents
electron—39.8.10—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 31× 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. 2026-08-19 20:12 UTCEG score recompute
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-18 21:43 UTCEG score recompute
  4. 2026-08-18 13:49 UTCEPSS rescore
  5. 2026-08-18 13:49 UTCEPSS rescore
  6. 2026-08-17 22:47 UTCEG score recompute
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 00:22 UTCEG score recompute
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 13:10 UTCEG score recompute
  12. 2026-08-16 02:15 UTCEPSS rescore
  13. 2026-08-15 03:34 UTCEG score recompute
  14. 2026-08-15 01:31 UTCEPSS rescore
  15. 2026-08-14 05:09 UTCEG score recompute
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-12 19:33 UTCEG score recompute
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-11 21:08 UTCEG score recompute
  20. 2026-08-11 09:56 UTCEG score recompute
  21. 2026-08-11 00:00 UTCEPSS rescore
  22. 2026-08-10 00:19 UTCEG score recompute
  23. 2026-08-09 13:47 UTCEPSS rescore
  24. 2026-08-09 01:56 UTCEG score recompute
  25. 2026-08-08 16:37 UTCEPSS rescore
Show 6 more
  1. 2026-08-08 03:31 UTCEG score recompute
  2. 2026-08-06 17:55 UTCEG score recompute
  3. 2026-08-06 13:47 UTCEPSS rescore
  4. 2026-08-05 18:30 UTCEG score recompute
  5. 2026-08-05 17:56 UTCEG score recompute
  6. 2026-08-05 17:55 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-70608?
CVE-2026-70608 is a high vulnerability published on August 5, 2026. Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because…
When was CVE-2026-70608 disclosed?
CVE-2026-70608 was first published in the National Vulnerability Database on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70608 actively exploited?
CVE-2026-70608 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 82.3% of all scored CVEs.
What is the CVSS score of CVE-2026-70608?
CVE-2026-70608 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-70608?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70608, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-70608

Explore →

Is Your Infrastructure Affected by CVE-2026-70608?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs