CVE-2026-59856

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 93% 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 — 5 sources updated 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 9.2.0736, the PHP omni-completion script in runtime/autoload/phpcomplete.vim interpolates a class or trait name, taken from the contents of the edited buffer, into a search() pattern that is run via win_execute() without escaping. A name containing a single quote can terminate the search() string argument early, and because the bar is honored as an Ex command separator, the remainder of the name is run as Ex commands; via the :! command this allows arbitrary operating-system command execution when a victim opens a crafted PHP file and invokes omni-completion. This issue is fixed in version 9.2.0736.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
6.5%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jul 9, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Arbitrary Code Execution via PHP Omni-Completion in Vim < 9.2.0736 · Advisory · vim/vim · GitHub

https://github.com/vim/vim/security/advisories/GHSA-fh26-8f79-wj97
github_commit

commit 43afc581a37a (vim/vim)

Fix landed in vim/vim commit 43afc581a37a — awaiting tagged release

https://github.com/vim/vim/commit/43afc581a37a35762dd0ef292f038b9dc5680a24

Vendor Advisories for CVE-2026-59856(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 (2:9.1.0016-1ubuntu7.18) @ noble2026-07-15ubuntu
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 31× in last 7d / 31× 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 20:52 UTCEG score recompute
  2. 2026-07-15 20:52 UTCVendor advisory
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 09:00 UTCEG score recompute
  6. 2026-07-15 09:00 UTCVendor advisory
  7. 2026-07-15 02:00 UTCEPSS rescore
  8. 2026-07-15 02:00 UTCEPSS rescore
  9. 2026-07-14 21:06 UTCEG score recompute
  10. 2026-07-14 21:06 UTCVendor advisory
  11. 2026-07-14 09:16 UTCEG score recompute
  12. 2026-07-14 09:16 UTCVendor advisory
  13. 2026-07-14 06:00 UTCNVD updateCVSS v3 → 7.8
  14. 2026-07-14 04:25 UTCMITRE cvelistV5CVSS v3 → 8.4
  15. 2026-07-13 22:31 UTCEPSS rescore
  16. 2026-07-13 21:26 UTCEG score recompute
  17. 2026-07-13 09:36 UTCEG score recompute
  18. 2026-07-13 06:13 UTCEPSS rescore
  19. 2026-07-13 06:13 UTCEPSS rescore
  20. 2026-07-12 21:46 UTCEG score recompute
  21. 2026-07-12 09:57 UTCEG score recompute
  22. 2026-07-12 05:46 UTCEPSS rescore
  23. 2026-07-11 22:07 UTCEG score recompute
  24. 2026-07-11 10:17 UTCEG score recompute
  25. 2026-07-11 08:27 UTCEPSS rescore
Show 6 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-10 22:27 UTCEG score recompute▼ 0.60
  3. 2026-07-10 20:19 UTCNVD updateCVSS v3 → 7.8
  4. 2026-07-10 10:37 UTCEG score recompute
  5. 2026-07-09 22:46 UTCEG score recompute
  6. 2026-07-09 22:45 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-59856?
CVE-2026-59856 is a high vulnerability published on July 9, 2026. Vim is an open source, command line text editor. Prior to 9.2.0736, the PHP omni-completion script in runtime/autoload/phpcomplete.vim interpolates a class or trait name, taken from the contents of the edited buffer, into a search() pattern that is run via win_execute() without escaping. A name…
When was CVE-2026-59856 disclosed?
CVE-2026-59856 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59856 actively exploited?
CVE-2026-59856 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-59856?
CVE-2026-59856 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-59856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59856, 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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