Bug 2498867 (CVE-2026-59856)

Summary:	CVE-2026-59856 vim: Vim: Arbitrary code execution via crafted PHP file in omni-completion
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, kshier, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, stcannon, suppawar, teagle, vlaad, watson-tool-maintainers, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Vim, an open-source command-line text editor. The PHP omni-completion script improperly handles specially crafted input. When a victim opens a malicious PHP file and invokes omni-completion, an unescaped class or trait name can be interpreted as Ex commands. This allows a remote attacker to achieve arbitrary operating-system command execution.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2499645
Bug Blocks:

Description OSIDB Bzimport 2026-07-09 23:02:03 UTC

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.

Comment 4 errata-xmlrpc 2026-07-29 17:34:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:47982 https://access.redhat.com/errata/RHSA-2026:47982

Comment 5 errata-xmlrpc 2026-07-30 13:50:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:48650 https://access.redhat.com/errata/RHSA-2026:48650

Comment 6 errata-xmlrpc 2026-08-17 02:29:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:55431 https://access.redhat.com/errata/RHSA-2026:55431

Comment 7 errata-xmlrpc 2026-08-18 12:25:47 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.22

Via RHSA-2026:54769 https://access.redhat.com/errata/RHSA-2026:54769