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Fencer Vulns
high 7.3

CVE-2022-48338 json

An issue was discovered in GNU Emacs through 28.2.

published 2023-02-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51038

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

An issue was discovered in GNU Emacs through 28.2. In ruby-mode.el, the ruby-find-library-file function has a local command injection vulnerability. The ruby-find-library-file function is an interactive function, and bound to C-c C-f. Inside the function, the external command gem is called through shell-command-to-string, but the feature-name parameters are not escaped. Thus, malicious Ruby source files may cause commands to be executed.

Patch / fix

  • emacs Debian 14, Debian 13, Debian 12 1:28.2+1-11

debian advisories DEBIAN-CVE-2022-48338

  • emacs Ubuntu 22.04 LTS 1:27.1+1-3ubuntu5.2

ubuntu advisories UBUNTU-CVE-2022-48338

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

  • emacs RHEL 9 1:27.2-8.el9_2.1
  • emacs-nox RHEL 9 1:27.2-8.el9_2.1
  • emacs-lucid RHEL 9 1:27.2-8.el9_2.1
  • emacs-common RHEL 9 1:27.2-8.el9_2.1
  • emacs-filesystem RHEL 9 1:27.2-8.el9_2.1

red hat advisories RHSA-2023:2626

  • emacs SLE Module for Desktop Applications 15 SP4, SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 27.2-150400.3.6.1

suse advisories SUSE-SU-2023:0598-1

  • emacs openSUSE Tumbleweed 28.2-2.1

opensuse advisories openSUSE-SU-2024:12721-1

  • emacs AlmaLinux 9 1:27.2-8.el9_2.1
  • emacs-nox AlmaLinux 9 1:27.2-8.el9_2.1
  • emacs-lucid AlmaLinux 9 1:27.2-8.el9_2.1
  • emacs-common AlmaLinux 9 1:27.2-8.el9_2.1
  • emacs-filesystem AlmaLinux 9 1:27.2-8.el9_2.1

almalinux advisories ALSA-2023:2626

  • emacs CBL-Mariner 2.0 28.2-4

azure linux advisories AZL-13681

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-2022-48338 updated cvss 7.3

emacs: local command injection in ruby-mode.el

  • Red Hat Enterprise Linux 6 emacs, emacs-el, emacs-nox, emacs-common
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 emacs, emacs-el, emacs-nox, emacs-common, emacs-terminal, emacs-filesystem Red Hat Enterprise Linux 8 emacs, emacs-nox, emacs-lucid, emacs-common, emacs-terminal, emacs-filesystem
    affected: no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) emacs 27.2-8.el9_2.1, emacs-nox 27.2-8.el9_2.1, emacs-lucid 27.2-8.el9_2.1, emacs-common 27.2-8.el9_2.1, emacs-filesystem 27.2-8.el9_2.1
    fixed: vendor fix RHSA-2023:2626

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
19 mo ago

Exploit prediction

1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command

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.