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Fencer Vulns
high 7.8

CVE-2026-57456 json

Vim: Arbitrary Code Execution via Python Omni-Completion Docstrings

published 2026-06-25 4 mo ago modified 2026-06-26 4 mo ago also EUVD-2026-39436

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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.

Patch / fix

  • vim vim 9.2.0699
  • vim Debian 13 2:9.1.1230-2+deb13u1
  • vim Debian 14 2:9.2.0782-1

debian advisories DEBIAN-CVE-2026-57456

  • vim Ubuntu 22.04 LTS 2:8.2.3995-1ubuntu2.33
  • vim Ubuntu 24.04 LTS 2:9.1.0016-1ubuntu7.17
  • vim Ubuntu 25.10 2:9.1.0967-1ubuntu6.8
  • vim Ubuntu 26.04 LTS 2:9.1.2141-1ubuntu4.6
  • vim Ubuntu Pro 14.04 LTS 2:7.4.052-1ubuntu3.1+esm30
  • vim Ubuntu Pro 16.04 LTS 2:7.4.1689-3ubuntu1.5+esm36
  • vim Ubuntu Pro 18.04 LTS 2:8.0.1453-1ubuntu1.13+esm21
  • vim Ubuntu Pro 20.04 LTS 2:8.1.2269-1ubuntu5.32+esm9

ubuntu advisories UBUNTU-CVE-2026-57456

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • vim RHEL 10.2 2:9.1.083-9.el10_2.12
  • vim-X11 RHEL 10.2 2:9.1.083-9.el10_2.12
  • vim-common RHEL 10.2 2:9.1.083-9.el10_2.12
  • vim-enhanced RHEL 10.2 2:9.1.083-9.el10_2.12
  • vim RHEL 8 2:8.0.1763-31.el8_10
  • vim-X11 RHEL 8 2:8.0.1763-31.el8_10
  • vim-common RHEL 8 2:8.0.1763-31.el8_10
  • vim-enhanced RHEL 8 2:8.0.1763-31.el8_10

red hat advisories RHSA-2026:72465RHSA-2026:72466RHSA-2026:70818RHSA-2026:69128RHSA-2026:68711RHSA-2026:55431

  • xxd AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-X11 AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-data AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-common AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-minimal AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-enhanced AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-filesystem AlmaLinux 10 2:9.1.083-9.el10_2.12
  • vim-X11 AlmaLinux 8 2:8.0.1763-31.el8_10

almalinux advisories ALSA-2026:48650ALSA-2026:48703ALSA-2026:47982

  • vim Rocky Linux 10 2:9.1.083-9.el10_2.12
  • vim Rocky Linux 8 2:8.0.1763-31.el8_10
  • vim Rocky Linux 9 2:8.2.2637-26.el9_8.13

rocky linux advisories RLSA-2026:48650RLSA-2026:48703RLSA-2026:47982

  • vim Alpine 3.23 9.2.0854-r0
  • vim Alpine 3.24 9.2.0699-r0

alpine advisories ALPINE-CVE-2026-57456

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • vim Azure Linux 3.0 9.2.0735-1

azure linux advisories AZL-91110

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-57456 updated cvss 7.8

vim: Vim: Arbitrary code execution via malicious docstrings in Python omni-completion

  • Red Hat AI Inference Server 3.2 rhaiis/vllm-cuda-rhel9 1790621718, rhaiis/vllm-rocm-rhel9 1790621713, rhaiis/model-opt-cuda-rhel9 1790621714
    fixed: vendor fix RHSA-2026:73859
  • Red Hat AI Inference Server 3.5 rhaii/vllm-cpu-rhel9 1791473614, rhaii/vllm-cuda-rhel9 1791473631, rhaii/vllm-rocm-rhel9 1791425869, rhaii/vllm-gaudi-rhel9 1791427182, rhaii/vllm-spyre-rhel9 1791818357, rhaii/model-opt-cuda-rhel9 1791803821
    fixed: vendor fix RHSA-2026:82066
  • Red Hat Enterprise Linux AI 3.5 rhelai3/bootc-cuda-rhel9 1793135861, rhelai3/bootc-rocm-rhel9 1793135863, rhelai3/bootc-aws-cuda-rhel9 1793194817, rhelai3/bootc-gcp-cuda-rhel9 1793194815, rhelai3/disk-image-cuda-rhel9 1793206758, rhelai3/bootc-azure-cuda-rhel9 1793194815, +1 more
    fixed: vendor fix RHSA-2026:92452
  • Red Hat Enterprise Linux AppStream (v. 8) vim-common 8.0.1763-31.el8_10
    fixed: vendor fix RHSA-2026:48703
  • Red Hat Enterprise Linux AppStream (v. 9) vim-common 8.2.2637-26.el9_8.13
    fixed: vendor fix RHSA-2026:47982
  • Red Hat Enterprise Linux AppStream (v. 10) vim-common 9.1.083-9.el10_2.12
    fixed: vendor fix RHSA-2026:48650
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) vim-X11 8.2.2637-20.el9_2.3, vim-common 8.2.2637-20.el9_2.3, vim-enhanced 8.2.2637-20.el9_2.3
    fixed: vendor fix RHSA-2026:72466
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) vim-X11 8.2.2637-20.el9_4.4, vim-common 8.2.2637-20.el9_4.4, vim-enhanced 8.2.2637-20.el9_4.4
    fixed: vendor fix RHSA-2026:72465
show 21 more
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) vim-common 9.1.083-5.el10_0.4
    fixed: vendor fix RHSA-2026:55431
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) vim-X11 8.2.2637-22.el9_6.4, vim-common 8.2.2637-22.el9_6.4, vim-enhanced 8.2.2637-22.el9_6.4
    fixed: vendor fix RHSA-2026:70818
  • Red Hat Enterprise Linux BaseOS (v. 8) vim 8.0.1763-31.el8_10
    fixed: vendor fix RHSA-2026:48703
  • Red Hat Enterprise Linux BaseOS (v. 9) vim 8.2.2637-26.el9_8.13
    fixed: vendor fix RHSA-2026:47982
  • Red Hat Enterprise Linux BaseOS (v. 10) vim 9.1.083-9.el10_2.12
    fixed: vendor fix RHSA-2026:48650
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) vim 8.2.2637-20.el9_2.3, vim-minimal 8.2.2637-20.el9_2.3, vim-filesystem 8.2.2637-20.el9_2.3
    fixed: vendor fix RHSA-2026:72466
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4) vim 8.2.2637-20.el9_4.4, vim-minimal 8.2.2637-20.el9_4.4, vim-filesystem 8.2.2637-20.el9_4.4
    fixed: vendor fix RHSA-2026:72465
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) vim 9.1.083-5.el10_0.4
    fixed: vendor fix RHSA-2026:55431
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) vim 8.2.2637-22.el9_6.4, vim-minimal 8.2.2637-22.el9_6.4, vim-filesystem 8.2.2637-22.el9_6.4
    fixed: vendor fix RHSA-2026:70818
  • Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) vim 7.4.629-5.el6_10.4, vim-X11 7.4.629-5.el6_10.4, vim-common 7.4.629-5.el6_10.4, vim-enhanced 7.4.629-5.el6_10.4
    fixed: vendor fix RHSA-2026:69128
  • Red Hat Enterprise Linux Server (v. 7 ELS) vim 7.4.629-8.el7_9.2, vim-X11 7.4.629-8.el7_9.2, vim-common 7.4.629-8.el7_9.2, vim-minimal 7.4.629-8.el7_9.2, vim-enhanced 7.4.629-8.el7_9.2
    fixed: vendor fix RHSA-2026:68711
  • Red Hat Hardened Images vim 9.2.780-1.hum1, xxd 9.2.780-1.hum1, vim-X11 9.2.780-1.hum1, vim-data 9.2.780-1.hum1, vim-common 9.2.780-1.hum1, vim-minimal 9.2.780-1.hum1, +3 more
    fixed: vendor fix RHSA-2026:35387
  • Red Hat Insights proxy 1.5 insights-proxy/insights-proxy-container-rhel9 1786433656
    fixed: vendor fix RHSA-2026:53371
  • Red Hat OpenShift AI 3.0 rhai/base-image-cpu-rhel9 1790277045, rhai/base-image-tpu-rhel9 1790276884, rhai/base-image-cuda-rhel9 1790276974, rhai/base-image-rocm-rhel9 1790276886, rhai/base-image-spyre-rhel9 1790276889
    fixed: vendor fix RHSA-2026:73960
  • Red Hat OpenShift AI 3.2 rhai/base-image-cpu-rhel9 1790703590, rhai/base-image-tpu-rhel9 1790703497, rhai/base-image-cuda-rhel9 1790703586, rhai/base-image-rocm-rhel9 1790703494, rhai/base-image-rocm-rhel9 1790703506, rhai/base-image-spyre-rhel9 1790703568
    fixed: vendor fix RHSA-2026:74460
  • Red Hat OpenShift AI 3.3 rhai/base-image-cpu-rhel9 1790703615, rhai/base-image-tpu-rhel9 1790703516, rhai/base-image-spyre-rhel9 1790703579, rhai/base-image-neuron-rhel9 1790703516, rhai/base-image-rocm-6.4-rhel9 1790703524, rhai/base-image-rocm-7.0-rhel9 1790703516, +4 more
    fixed: vendor fix RHSA-2026:74359
  • Red Hat OpenShift AI 3.4 rhai/base-image-cpu-rhel9 1790703631, rhai/base-image-tpu-rhel9 1790703539, rhai/base-image-gaudi-rhel9 1790703553, rhai/base-image-spyre-rhel9 1790703597, rhai/base-image-neuron-rhel9 1790703542, rhai/base-image-rocm-6.4-rhel9 1790703545, +3 more
    fixed: vendor fix RHSA-2026:74679
  • Red Hat OpenShift AI 3.5 rhai/base-image-cpu-rhel9 1790703656, rhai/base-image-tpu-rhel9 1790703554, rhai/base-image-gaudi-rhel9 1790703552, rhai/base-image-rubin-rhel9 1790703707, rhai/base-image-spyre-rhel9 1790703630, rhai/base-image-neuron-rhel9 1790703557, +3 more
    fixed: vendor fix RHSA-2026:75652
  • Red Hat OpenShift Container Platform 4.22 rhcos 4.22.9.8.202608130832
    fixed: vendor fix RHSA-2026:54769
  • Red Hat Update Infrastructure 5 rhui5/cds-rhel9 1786533457, rhui5/rhua-rhel9 1786533529, rhui5/haproxy-rhel9 1786533449, rhui5/rhua-tp-rhel9 1787241260, rhui5/installer-rhel9 1786435483, rhui5/installer-tp-rhel9 1787135742, +2 more
    fixed: vendor fix RHSA-2026:54387
  • Red Hat Enterprise Linux AppStream (v. 8) vim-X11 8.0.1763-31.el8_10, vim-enhanced 8.0.1763-31.el8_10, vim-filesystem 8.0.1763-31.el8_10 Red Hat Enterprise Linux AppStream (v. 9) vim-X11 8.2.2637-26.el9_8.13, vim-enhanced 8.2.2637-26.el9_8.13 Red Hat Enterprise Linux AppStream (v. 10) xxd 9.1.083-9.el10_2.12, vim-X11 9.1.083-9.el10_2.12, vim-enhanced 9.1.083-9.el10_2.12 Red Hat Enterprise Linux AppStream EUS (v. 10.0) xxd 9.1.083-5.el10_0.4, vim-X11 9.1.083-5.el10_0.4, vim-enhanced 9.1.083-5.el10_0.4 Red Hat Enterprise Linux BaseOS (v. 8) vim-minimal 8.0.1763-31.el8_10 Red Hat Enterprise Linux BaseOS (v. 9) vim-minimal 8.2.2637-26.el9_8.13, vim-filesystem 8.2.2637-26.el9_8.13
    +6 more products
    Red Hat Enterprise Linux BaseOS (v. 10) vim-data 9.1.083-9.el10_2.12, vim-minimal 9.1.083-9.el10_2.12, vim-filesystem 9.1.083-9.el10_2.12 Red Hat Enterprise Linux BaseOS EUS (v. 10.0) vim-data 9.1.083-5.el10_0.4, vim-minimal 9.1.083-5.el10_0.4, vim-filesystem 9.1.083-5.el10_0.4 Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) vim-minimal 7.4.629-5.el6_10.4, vim-filesystem 7.4.629-5.el6_10.4 Red Hat Enterprise Linux Server (v. 7 ELS) vim-filesystem 7.4.629-8.el7_9.2 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    not affected: vulnerable code not present

1 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.4 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
CNA 4.0 8.4 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
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • vim vim

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.