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Fencer Intel
high 7.0

CVE-2026-54230 json

Abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites

published 4mo ago modified 7d ago also EUVD-2026-36639

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport. Event scripts write output files using shell redirections without the O_NOFOLLOW flag. If the target file is replaced with a symlink, the shell process running as root follows the symlink and writes content to the symlink target, allowing arbitrary file overwrites on the system.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.1.11-62.el7_9
  • Red Hat Red Hat Enterprise Linux 8 0:2.10.9-26.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.10.9-25.el8_4.2
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.10.9-25.el8_4.2
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.10.9-25.el8_6.2
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:2.10.9-25.el8_6.2
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.10.9-25.el8_8.2
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.10.9-25.el8_8.2
  • abrt RHEL 8 2.10.9-26.el8_10
  • abrt-cli RHEL 8 2.10.9-26.el8_10
  • abrt-gui RHEL 8 2.10.9-26.el8_10
  • abrt-tui RHEL 8 2.10.9-26.el8_10
  • abrt-dbus RHEL 8 2.10.9-26.el8_10
  • abrt-libs RHEL 8 2.10.9-26.el8_10
  • abrt-cli-ng RHEL 8 2.10.9-26.el8_10
  • abrt-desktop RHEL 8 2.10.9-26.el8_10

red hat advisories RHSA-2026:69121RHSA-2026:69116RHSA-2026:69117RHSA-2026:69115RHSA-2026:54272

  • abrt AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-cli AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-gui AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-tui AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-dbus AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-libs AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-cli-ng AlmaLinux 8 2.10.9-26.el8_10.alma.1
  • abrt-desktop AlmaLinux 8 2.10.9-26.el8_10.alma.1

almalinux advisories ALSA-2026:54272

  • abrt Rocky Linux 8 2.10.9-26.el8_10.rocky.0.1

rocky linux advisories RLSA-2026:54272

Is CVE-2026-54230 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2026-54230 updated cvss 7.0

abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites

  • Red Hat Enterprise Linux 6 abrt, abrt-cli, abrt-gui, abrt-tui, abrt-libs, abrt-python, +6 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) abrt 2.10.9-26.el8_10, abrt-cli 2.10.9-26.el8_10, abrt-gui 2.10.9-26.el8_10, abrt-tui 2.10.9-26.el8_10, abrt-dbus 2.10.9-26.el8_10, abrt-libs 2.10.9-26.el8_10, +15 more
    fixed: vendor fix RHSA-2026:54272
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) abrt 2.10.9-25.el8_4.2, abrt-cli 2.10.9-25.el8_4.2, abrt-gui 2.10.9-25.el8_4.2, abrt-tui 2.10.9-25.el8_4.2, abrt-dbus 2.10.9-25.el8_4.2, abrt-libs 2.10.9-25.el8_4.2, +15 more
    fixed: vendor fix RHSA-2026:69116
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) abrt 2.10.9-25.el8_6.2, abrt-cli 2.10.9-25.el8_6.2, abrt-gui 2.10.9-25.el8_6.2, abrt-tui 2.10.9-25.el8_6.2, abrt-dbus 2.10.9-25.el8_6.2, abrt-libs 2.10.9-25.el8_6.2, +15 more
    fixed: vendor fix RHSA-2026:69115
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) abrt 2.10.9-25.el8_8.2, abrt-cli 2.10.9-25.el8_8.2, abrt-gui 2.10.9-25.el8_8.2, abrt-tui 2.10.9-25.el8_8.2, abrt-dbus 2.10.9-25.el8_8.2, abrt-libs 2.10.9-25.el8_8.2, +15 more
    fixed: vendor fix RHSA-2026:69117
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) abrt 2.10.9-25.el8_4.2, abrt-cli 2.10.9-25.el8_4.2, abrt-gui 2.10.9-25.el8_4.2, abrt-tui 2.10.9-25.el8_4.2, abrt-dbus 2.10.9-25.el8_4.2, abrt-libs 2.10.9-25.el8_4.2, +15 more
    fixed: vendor fix RHSA-2026:69116
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) abrt 2.10.9-25.el8_6.2, abrt-cli 2.10.9-25.el8_6.2, abrt-gui 2.10.9-25.el8_6.2, abrt-tui 2.10.9-25.el8_6.2, abrt-dbus 2.10.9-25.el8_6.2, abrt-libs 2.10.9-25.el8_6.2, +15 more
    fixed: vendor fix RHSA-2026:69115
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) abrt 2.10.9-25.el8_8.2, abrt-cli 2.10.9-25.el8_8.2, abrt-gui 2.10.9-25.el8_8.2, abrt-tui 2.10.9-25.el8_8.2, abrt-dbus 2.10.9-25.el8_8.2, abrt-libs 2.10.9-25.el8_8.2, +15 more
    fixed: vendor fix RHSA-2026:69117
show 1 more
  • Red Hat Enterprise Linux Server (v. 7 ELS) abrt 2.1.11-62.el7_9, abrt-cli 2.1.11-62.el7_9, abrt-gui 2.1.11-62.el7_9, abrt-tui 2.1.11-62.el7_9, abrt-dbus 2.1.11-62.el7_9, abrt-libs 2.1.11-62.el7_9, +10 more Red Hat Enterprise Linux Server Optional (v. 7 ELS) abrt-retrace-client 2.1.11-62.el7_9, abrt-addon-upload-watch 2.1.11-62.el7_9
    fixed: vendor fix RHSA-2026:69121

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
4mo ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Intel 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.