Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.
CVE-2026-102673
HIGHPre-NVD 8.28.2—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (3rd 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
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.2Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 8.2
- EG Score
- 8.2HIGHmedium confidence
- EG Risk
- 37EG Risk 37/100CISA 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 computedSeverity82% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.1%
- EPSS %ILE
- 3rd
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (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
September 29, 2026
Last Modified
September 30, 2026
Advisory Details (8)
Auto-updated Sep 29, 2026Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available
electron v43.0.0
Patch available: electron/electron v43.0.0
https://github.com/electron/electron/releases/tag/v43.0.0github_release Patch Available
electron v42.5.2
Patch available: electron/electron v42.5.2
https://github.com/electron/electron/releases/tag/v42.5.2github_release Patch Available
electron v41.10.4
Patch available: electron/electron v41.10.4
https://github.com/electron/electron/releases/tag/v41.10.4github_commit
commit ebe1165ee2b0 (electron/electron)
Fix landed in electron/electron commit ebe1165ee2b0 — awaiting tagged release
https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04dagithub_commit
commit e26b2640e779 (electron/electron)
Fix landed in electron/electron commit e26b2640e779 — awaiting tagged release
https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69github_commit
commit 7ea14d5f55ec (electron/electron)
Fix landed in electron/electron commit 7ea14d5f55ec — awaiting tagged release
https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bbagithub_pr
fix: inherit iframe sandbox flags in windows opened on the OpenURL navigation path
Fix merged in electron/electron PR #52133 on 2026-06-29 — awaiting tagged release
https://github.com/electron/electron/pull/52133github Patch Available
Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab · Advisory · electron/electron · GitHub
https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4Vendor Advisories for CVE-2026-102673(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)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| electron | — | 41.10.4 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 12× 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.
- 2026-10-04 01:03 UTCEG score recompute
- 2026-10-03 14:25 UTCEPSS rescore
- 2026-10-02 23:52 UTCEG score recompute
- 2026-10-01 22:39 UTCEG score recompute
- 2026-10-01 19:49 UTCEPSS rescore
- 2026-09-30 21:29 UTCEG score recompute
- 2026-09-30 20:27 UTCEG score recompute
- 2026-09-30 18:47 UTCEG score recompute
- 2026-09-30 15:02 UTCEPSS rescore
- 2026-09-29 17:31 UTCEG score recompute
- 2026-09-29 16:45 UTCEG score recompute
- 2026-09-29 16:43 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Same product
10 shownnpm:electron
- CVE-2026-34775EG 9.8CRITICAL
- CVE-2017-16151EG 9.8CRITICAL
- CVE-2022-4135EG 9.6 KEVEPSS p98CRITICAL
- CVE-2026-54257EG 9.3CRITICAL
- CVE-2023-5217NVD 8.8EG 9.0 KEVEPSS p99CRITICAL
- CVE-2023-4863NVD 8.8EG 9.0 KEVEPSS p100CRITICAL
- CVE-2018-1000006NVD 8.8EG 9.0EPSS p100CRITICAL
- CVE-2026-34765EG 8.8HIGH
- CVE-2026-34772EG 8.8HIGH
- CVE-2026-34771EG 8.8HIGH
Frequently asked(5)
What is CVE-2026-102673?
CVE-2026-102673 is a high vulnerability published on September 29, 2026. Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not…
When was CVE-2026-102673 disclosed?
CVE-2026-102673 was first published on September 29, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-102673 actively exploited?
CVE-2026-102673 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102673?
CVE-2026-102673 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102673?
A fix for CVE-2026-102673 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-102673 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-102673
Is Your Infrastructure Affected by CVE-2026-102673?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.