CVE-2026-43942

MEDIUMNVD 5.56.5▲
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

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

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In versions 3.8.15 and prior, the getConstants() IPC handler in src/app/lib/ipc-sync.js serialises the entire process.env object and sends it to the renderer. The data is stored as window.pre.env and is accessible from any JavaScript running in the renderer (e.g., via the DevTools console or a compromised webview context). An attacker who achieves any JavaScript execution within the renderer can trivially exfiltrate these secrets to a remote server, leading to cloud account compromise, supply chain attacks, and lateral movement. At time of publication, there are no publicly available patches.

CVSS v3
5.5
EG Score
6.5(medium)
EPSS
1.2%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 8, 2026

Advisory Details (1)

Auto-updated May 8, 2026
Patch available. Sources: github.
github Patch Available

Full process.env exposed to renderer via window.pre.env in electerm · Advisory · electerm/electerm · GitHub

https://github.com/electerm/electerm/security/advisories/GHSA-37j4-88rp-2f6h

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
npmelecterm—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 32× 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. 2026-07-09 19:10 UTCEPSS rescore
  2. 2026-07-07 13:46 UTCEPSS rescore
  3. 2026-07-05 02:30 UTCEPSS rescore
  4. 2026-07-04 06:31 UTCEPSS rescore
  5. 2026-07-01 15:07 UTCEPSS rescore
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-29 14:06 UTCEPSS rescore
  8. 2026-06-28 14:07 UTCEPSS rescore
  9. 2026-06-28 05:24 UTCEG score recompute
  10. 2026-06-28 05:24 UTCGHSA enrichment
  11. 2026-06-28 04:56 UTCEPSS rescore
  12. 2026-06-27 03:08 UTCEPSS rescore
  13. 2026-06-26 22:02 UTCEG score recompute
  14. 2026-06-26 22:02 UTCGHSA enrichment
  15. 2026-06-25 13:49 UTCEPSS rescore
  16. 2026-06-25 13:49 UTCEPSS rescore
  17. 2026-06-24 14:05 UTCEPSS rescore
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-21 01:59 UTCEPSS rescore
  20. 2026-06-18 17:52 UTCEPSS rescore
  21. 2026-06-18 17:52 UTCEPSS rescore
  22. 2026-06-17 17:53 UTCEPSS rescore
  23. 2026-06-17 02:31 UTCEG score recompute
  24. 2026-06-17 02:31 UTCGHSA enrichment
  25. 2026-06-15 17:49 UTCEPSS rescore
Show 58 more
  1. 2026-06-15 04:29 UTCEG score recompute
  2. 2026-06-15 04:29 UTCGHSA enrichment
  3. 2026-06-14 03:27 UTCEG score recompute
  4. 2026-06-14 03:27 UTCGHSA enrichment
  5. 2026-06-13 23:00 UTCEPSS rescore
  6. 2026-06-12 23:12 UTCEPSS rescore
  7. 2026-06-12 23:12 UTCEPSS rescore
  8. 2026-06-12 01:45 UTCEG score recompute
  9. 2026-06-12 01:45 UTCGHSA enrichment
  10. 2026-06-11 14:00 UTCEPSS rescore
  11. 2026-06-11 00:44 UTCEG score recompute
  12. 2026-06-11 00:44 UTCGHSA enrichment
  13. 2026-06-10 22:18 UTCEPSS rescore
  14. 2026-06-10 13:22 UTCEPSS rescore
  15. 2026-06-10 13:22 UTCEPSS rescore
  16. 2026-06-09 22:54 UTCEG score recompute
  17. 2026-06-09 22:54 UTCGHSA enrichment
  18. 2026-06-08 21:53 UTCEG score recompute
  19. 2026-06-08 21:53 UTCGHSA enrichment
  20. 2026-06-08 14:17 UTCEPSS rescore
  21. 2026-06-08 14:17 UTCEPSS rescore
  22. 2026-06-07 15:25 UTCEPSS rescore
  23. 2026-06-07 15:25 UTCEPSS rescore
  24. 2026-06-07 14:55 UTCEG score recompute
  25. 2026-06-07 14:55 UTCGHSA enrichment
  26. 2026-06-06 13:53 UTCEG score recompute
  27. 2026-06-06 13:53 UTCGHSA enrichment
  28. 2026-06-06 13:47 UTCEPSS rescore
  29. 2026-06-06 13:47 UTCEPSS rescore
  30. 2026-06-05 12:52 UTCEG score recompute
  31. 2026-06-05 12:52 UTCGHSA enrichment
  32. 2026-06-04 11:51 UTCEG score recompute
  33. 2026-06-04 11:51 UTCGHSA enrichment
  34. 2026-06-03 10:49 UTCEG score recompute
  35. 2026-06-03 10:49 UTCGHSA enrichment
  36. 2026-06-02 20:13 UTCEPSS rescore
  37. 2026-06-02 09:48 UTCEG score recompute
  38. 2026-06-02 09:48 UTCGHSA enrichment
  39. 2026-06-01 13:52 UTCEPSS rescore
  40. 2026-06-01 13:52 UTCEPSS rescore
  41. 2026-06-01 08:47 UTCEG score recompute
  42. 2026-06-01 08:47 UTCGHSA enrichment
  43. 2026-05-31 22:30 UTCEPSS rescore
  44. 2026-05-31 22:30 UTCEPSS rescore
  45. 2026-05-31 00:16 UTCEPSS rescore
  46. 2026-05-31 00:16 UTCEPSS rescore
  47. 2026-05-29 13:44 UTCEPSS rescore
  48. 2026-05-29 13:44 UTCEPSS rescore
  49. 2026-05-28 13:44 UTCEPSS rescore
  50. 2026-05-28 13:44 UTCEPSS rescore
  51. 2026-05-27 13:40 UTCEPSS rescore
  52. 2026-05-27 13:40 UTCEPSS rescore
  53. 2026-05-26 13:44 UTCEPSS rescore
  54. 2026-05-21 22:43 UTCEPSS rescore
  55. 2026-05-20 22:38 UTCEPSS rescore
  56. 2026-05-20 13:49 UTCEG score recompute
  57. 2026-05-20 13:49 UTCGHSA enrichment
  58. 2026-05-20 11:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43942?
CVE-2026-43942 is a medium vulnerability published on May 8, 2026. electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In versions 3.8.15 and prior, the getConstants() IPC handler in src/app/lib/ipc-sync.js serialises the entire process.env object and sends it to the renderer. The data is stored as window.pre.env and is…
When was CVE-2026-43942 disclosed?
CVE-2026-43942 was first published in the National Vulnerability Database on May 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43942 actively exploited?
CVE-2026-43942 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43942?
CVE-2026-43942 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.5.
How do I remediate CVE-2026-43942?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43942, 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

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