CVE-2026-52858

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 90% 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
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

Vim is an open source, command line text editor. Prior to version 9.2.0561, the Python omni-completion script in python3complete.vim for Vim with the +python3 interpreter enabled (and the legacy pythoncomplete.vim for builds with the +python interpreter) executes the import and from statements found in the current buffer through Python's import machinery. Because the buffer's working directory is on sys.path, opening a hostile .py file with a sibling Python package and invoking omni-completion runs that package's top-level code as the editing user. This issue has been patched in version 9.2.0561.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
—
EPSS
10.3%
KEV
Not listed

Published

June 11, 2026

Last Modified

June 15, 2026

Advisory Details (2)

Auto-updated Jun 12, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Arbitrary Code Execution via Python Omni-Completion in Vim < 9.2.0561 · Advisory · vim/vim · GitHub

https://github.com/vim/vim/security/advisories/GHSA-52mc-rq6p-rc7c
github_commit

commit 4b850457e12e (vim/vim)

Fix landed in vim/vim commit 4b850457e12e — awaiting tagged release

https://github.com/vim/vim/commit/4b850457e12e1a678dd209f2868154f7553cbf8d

Vendor Advisories for CVE-2026-52858(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuvim-tiny (2:7.4.1689-3ubuntu1.5+esm35) @ xenial2026-07-16ubuntu

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(3)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 82× 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.

Showing the most recent 100 of 118 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-52858?
CVE-2026-52858 is a high vulnerability published on June 11, 2026. Vim is an open source, command line text editor. Prior to version 9.2.0561, the Python omni-completion script in python3complete.vim for Vim with the +python3 interpreter enabled (and the legacy pythoncomplete.vim for builds with the +python interpreter) executes the import and from statements…
When was CVE-2026-52858 disclosed?
CVE-2026-52858 was first published in the National Vulnerability Database on June 11, 2026, with the most recent update on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52858 actively exploited?
CVE-2026-52858 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-52858?
CVE-2026-52858 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-52858?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52858, 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.

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