CVE-2026-42850

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 79% 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, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.0, it is possible to inject commands within the subshell through kitty error. A special escape code will make kitty return an error, this error is not escaped and will be correctly echoed back to the terminal with CRLF, as such it will be run by the shell in use. To exploit this bug, the victim must use a netcat or a similar program to connect to the attacker, or else listening for someone to connect. Once this condition is set, an attacker could pwn the computer of the victim using a special kitty's escape code that will run a command in the shell in use. Version 04.7.0 fixes the issue.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
20.6%
KEV
Not listed

Published

June 12, 2026

Last Modified

June 16, 2026

Advisory Details (1)

Auto-updated Jun 12, 2026
Patch available. Sources: github.
github Patch Available

Shell command injection · Advisory · kovidgoyal/kitty · GitHub

https://github.com/kovidgoyal/kitty/security/advisories/GHSA-p64q-59hq-5q65

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 92× 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. 2026-07-15 02:00 UTCEPSS rescore
  2. 2026-07-15 01:35 UTCEG score recompute
  3. 2026-07-14 12:04 UTCEG score recompute
  4. 2026-07-13 23:08 UTCEG score recompute
  5. 2026-07-13 22:30 UTCEPSS rescore
  6. 2026-07-13 11:26 UTCEG score recompute
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  8. 2026-07-12 17:39 UTCEG score recompute
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-12 02:15 UTCEG score recompute
  11. 2026-07-11 14:39 UTCEG score recompute
  12. 2026-07-11 08:27 UTCEPSS rescore
  13. 2026-07-11 02:53 UTCEG score recompute
  14. 2026-07-10 13:05 UTCEG score recompute
  15. 2026-07-09 21:37 UTCEG score recompute
  16. 2026-07-09 19:10 UTCEPSS rescore
  17. 2026-07-09 08:13 UTCEG score recompute
  18. 2026-07-08 20:35 UTCEG score recompute
  19. 2026-07-08 15:16 UTCEPSS rescore
  20. 2026-07-08 08:58 UTCEG score recompute
  21. 2026-07-07 21:21 UTCEG score recompute
  22. 2026-07-07 13:46 UTCEPSS rescore
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  24. 2026-07-06 16:27 UTCEPSS rescore
  25. 2026-07-06 16:27 UTCEPSS rescore
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  1. 2026-07-06 02:23 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 22:19 UTCEG score recompute
  4. 2026-07-05 10:43 UTCEG score recompute
  5. 2026-07-05 02:30 UTCEPSS rescore
  6. 2026-07-04 22:27 UTCEG score recompute
  7. 2026-07-04 10:50 UTCEG score recompute
  8. 2026-07-03 19:05 UTCEG score recompute
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  10. 2026-07-02 18:55 UTCEG score recompute
  11. 2026-07-02 07:19 UTCEG score recompute
  12. 2026-07-01 19:43 UTCEG score recompute
  13. 2026-07-01 15:06 UTCEPSS rescore
  14. 2026-07-01 08:08 UTCEG score recompute
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-30 20:31 UTCEG score recompute
  17. 2026-06-30 08:56 UTCEG score recompute
  18. 2026-06-29 21:21 UTCEG score recompute
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-29 09:45 UTCEG score recompute
  21. 2026-06-28 22:02 UTCEG score recompute
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 10:27 UTCEG score recompute
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-27 22:51 UTCEG score recompute
  26. 2026-06-27 11:15 UTCEG score recompute
  27. 2026-06-27 03:08 UTCEPSS rescore
  28. 2026-06-26 23:40 UTCEG score recompute
  29. 2026-06-26 12:03 UTCEG score recompute
  30. 2026-06-25 19:52 UTCEG score recompute
  31. 2026-06-25 13:49 UTCEPSS rescore
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  33. 2026-06-25 08:16 UTCEG score recompute
  34. 2026-06-24 20:40 UTCEG score recompute
  35. 2026-06-24 14:05 UTCEPSS rescore
  36. 2026-06-24 06:48 UTCEG score recompute
  37. 2026-06-23 21:33 UTCEPSS rescore
  38. 2026-06-23 18:25 UTCEG score recompute
  39. 2026-06-23 06:50 UTCEG score recompute
  40. 2026-06-22 17:29 UTCEG score recompute
  41. 2026-06-22 14:25 UTCEPSS rescore
  42. 2026-06-22 14:25 UTCEPSS rescore
  43. 2026-06-22 04:34 UTCEG score recompute
  44. 2026-06-21 16:56 UTCEG score recompute
  45. 2026-06-21 14:56 UTCEPSS rescore
  46. 2026-06-21 14:56 UTCEPSS rescore
  47. 2026-06-21 05:18 UTCEG score recompute
  48. 2026-06-21 01:59 UTCEPSS rescore
  49. 2026-06-20 17:36 UTCEG score recompute
  50. 2026-06-20 05:59 UTCEG score recompute
  51. 2026-06-19 19:25 UTCEPSS rescore
  52. 2026-06-19 18:01 UTCEG score recompute
  53. 2026-06-19 06:15 UTCEG score recompute
  54. 2026-06-18 18:36 UTCEG score recompute
  55. 2026-06-18 17:52 UTCEPSS rescore
  56. 2026-06-18 17:52 UTCEPSS rescore
  57. 2026-06-18 06:58 UTCEG score recompute
  58. 2026-06-17 18:11 UTCEG score recompute
  59. 2026-06-17 17:53 UTCEPSS rescore
  60. 2026-06-17 06:36 UTCEG score recompute
  61. 2026-06-16 19:00 UTCEG score recompute▲ 1.40
  62. 2026-06-16 17:52 UTCEPSS rescore
  63. 2026-06-16 16:16 UTCNVD updateCVSS v3 → 8.8
  64. 2026-06-16 07:23 UTCEG score recompute
  65. 2026-06-15 19:48 UTCEG score recompute
  66. 2026-06-15 17:49 UTCEPSS rescore
  67. 2026-06-15 08:11 UTCEG score recompute
  68. 2026-06-14 20:35 UTCEG score recompute
  69. 2026-06-14 09:00 UTCEG score recompute
  70. 2026-06-13 23:00 UTCEPSS rescore
  71. 2026-06-13 21:25 UTCEG score recompute
  72. 2026-06-13 09:50 UTCEG score recompute
  73. 2026-06-12 23:12 UTCEPSS rescore
  74. 2026-06-12 22:14 UTCEG score recompute
  75. 2026-06-12 22:13 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-42850?
CVE-2026-42850 is a high vulnerability published on June 12, 2026. Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.0, it is possible to inject commands within the subshell through kitty error. A special escape code will make kitty return an error, this error is not escaped and will be correctly echoed back to the terminal with CRLF, as such…
When was CVE-2026-42850 disclosed?
CVE-2026-42850 was first published in the National Vulnerability Database on June 12, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42850 actively exploited?
CVE-2026-42850 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42850?
CVE-2026-42850 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-42850?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42850, 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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