CVE-2026-57456

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 96% 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
Trending — Patch released this week
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 9.2.0699, Vim's Python omni-completion (runtime/autoload/python3complete.vim and the legacy pythoncomplete.vim) executes reconstructed function and class definitions from the current buffer with exec() as part of populating the completion dictionary. When reconstructing that source, each scope's docstring is inserted verbatim between triple quotes with no escaping, so a hostile buffer can break out of the triple-quoted literal and execute attacker-controlled Python during omni-completion. This vulnerability is fixed in 9.2.0699.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
4.0%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Arbitrary Code Execution via Python Omni-Completion Docstrings in Vim < 9.2.0699 · Advisory · vim/vim · GitHub

https://github.com/vim/vim/security/advisories/GHSA-ppj8-wqjf-6fp3
github_commit

commit cce141c42740 (vim/vim)

Fix landed in vim/vim commit cce141c42740 — awaiting tagged release

https://github.com/vim/vim/commit/cce141c42740f122dd8486ae04e21c2a81016ba8

Vendor Advisories for CVE-2026-57456(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuxxd (2:8.2.3995-1ubuntu2.33) @ jammy2026-07-06ubuntu
redhatvim-main-9.2.780-1.hum12026-07-03redhat

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(1)

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

Additional Vendor Advisories

(2)

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 34× in last 7d / 49× 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. 2026-07-07 01:28 UTCEG score recompute
  2. 2026-07-07 01:28 UTCVendor advisory
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 12:45 UTCEG score recompute
  6. 2026-07-06 12:45 UTCVendor advisory
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-06 00:02 UTCEG score recompute
  10. 2026-07-06 00:02 UTCVendor advisory
  11. 2026-07-05 11:18 UTCEG score recompute
  12. 2026-07-05 11:18 UTCVendor advisory
  13. 2026-07-05 02:31 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 22:35 UTCEG score recompute
  16. 2026-07-04 22:35 UTCVendor advisory
  17. 2026-07-04 09:52 UTCEG score recompute
  18. 2026-07-04 09:52 UTCVendor advisory
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-03 21:09 UTCEG score recompute
  22. 2026-07-03 21:09 UTCVendor advisory
  23. 2026-07-03 08:26 UTCEG score recompute
  24. 2026-07-03 08:26 UTCVendor advisory
  25. 2026-07-02 19:43 UTCEG score recompute
Show 24 more
  1. 2026-07-02 19:43 UTCVendor advisory
  2. 2026-07-02 07:00 UTCEG score recompute
  3. 2026-07-02 07:00 UTCVendor advisory
  4. 2026-07-01 18:16 UTCEG score recompute
  5. 2026-07-01 18:16 UTCVendor advisory
  6. 2026-07-01 15:07 UTCEPSS rescore
  7. 2026-07-01 05:31 UTCEG score recompute
  8. 2026-06-30 23:22 UTCEPSS rescore
  9. 2026-06-30 16:47 UTCEG score recompute
  10. 2026-06-30 04:04 UTCEG score recompute
  11. 2026-06-29 15:19 UTCEG score recompute
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-29 02:33 UTCEG score recompute
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 13:49 UTCEG score recompute
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-28 01:07 UTCEG score recompute
  18. 2026-06-27 12:24 UTCEG score recompute
  19. 2026-06-27 03:08 UTCEPSS rescore
  20. 2026-06-26 23:40 UTCEG score recompute
  21. 2026-06-26 10:57 UTCEG score recompute▼ 0.60
  22. 2026-06-26 09:42 UTCNVD updateCVSS v3 → 7.8
  23. 2026-06-25 17:49 UTCEG score recompute
  24. 2026-06-25 17:48 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-57456?
CVE-2026-57456 is a high vulnerability published on June 25, 2026. Vim is an open source, command line text editor. Prior to 9.2.0699, Vim's Python omni-completion (runtime/autoload/python3complete.vim and the legacy pythoncomplete.vim) executes reconstructed function and class definitions from the current buffer with exec() as part of populating the completion…
When was CVE-2026-57456 disclosed?
CVE-2026-57456 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57456 actively exploited?
CVE-2026-57456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57456?
CVE-2026-57456 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-57456?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57456, 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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