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Fencer Vulns
medium 5.5

CVE-2026-54231 json

Abrt: unsanitized systemd journal content written to dump directory files enables content injection

published 2026-06-13 4 mo ago modified 2026-11-05 3 d ago also EUVD-2026-36640

cvss
5.5
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 8%
public exploits
0
none known

Summary

A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport. The event script queries the systemd journal for log entries matching the crashed process and writes the results to files in the dump directory without sanitizing embedded control characters. A local user can inject arbitrary content into the journal output by embedding newline characters in syslog messages, controlling the content that root writes to dump directory files.

Patch / fix

  • 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-2026:69116RHSA-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

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-2026-54231 updated cvss 5.5

abrt: unsanitized systemd journal content written to dump directory files enables content injection

  • 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 7 abrt, abrt-cli, abrt-gui, abrt-tui, abrt-dbus, abrt-libs, +12 more
    affected: workaround, no fix available “Fix deferred”
  • 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
show 1 more
  • 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

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
partial
Assessed
4 mo ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

  • 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-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

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.