CVE-2026-57456
Last modified
CVE-2026-57456 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vim | Vim | < 9.2.0699 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-57456?
How severe is CVE-2026-57456?
How do I fix CVE-2026-57456?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-5745A flaw was found in libarchive. A NULL pointer dereference v…5.5
- CVE-2026-57451Vim is an open source, command line text editor. Prior to 9.…6.1
- CVE-2026-57452Vim is an open source, command line text editor. Prior to 9.…5.5
- CVE-2026-57453Vim is an open source, command line text editor. From 9.1.17…7.3
- CVE-2026-57454Vim is an open source, command line text editor. From 9.2.03…6.1
- CVE-2026-57455Vim is an open source, command line text editor. Prior to 9.…7.8
- CVE-2026-5747An out-of-bounds write issue in the virtio PCI transport in …8.7
- CVE-2026-57473A vulnerability exists in the netclient and factory services…5.8
- CVE-2026-57474Deloitte AI Assist for Customer disclosed some configuration…6.9
- CVE-2026-57475Deloitte AI Assist for Customer accepted unauthenticated POS…6.9
- CVE-2026-57476Deloitte AI Assist for Customer exposed unauthenticated API …6.3
- CVE-2026-5748The Text Snippets plugin for WordPress is vulnerable to Stor…6.4
Are you affected by CVE-2026-57456?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST