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CVE-2026-54230— Abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Redhat libreport是美国Redhat公司开源的一个问题报告通用库。 Redhat libreport存在后置链接漏洞，该漏洞源于事件脚本使用 shell 重定向写入输出文件时未设置 O_NOFOLLOW 标志，若目标文件被替换为符号链接，以 root 身份运行的 shell 进程会跟随该符号链接并将内容写入符号链接指向的目标，导致系统上可发生任意文件覆盖。

CVSS 7.0 · High EPSS 0.14% · P4

Possible ATT&CK Techniques 1 AI

T1548.002 · Bypass User Account Control

Affected Version Matrix 3

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 0:2.10.9-26.el8_10< * unaffected
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I. Basic Information for CVE-2026-54230

Vulnerability Information
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Vulnerability Title
Abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Redhat libreport 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Redhat libreport是美国Redhat公司开源的一个问题报告通用库。 Redhat libreport存在后置链接漏洞，该漏洞源于事件脚本使用 shell 重定向写入输出文件时未设置 O_NOFOLLOW 标志，若目标文件被替换为符号链接，以 root 身份运行的 shell 进程会跟随该符号链接并将内容写入符号链接指向的目标，导致系统上可发生任意文件覆盖。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 8 0:2.10.9-26.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7

II. Public POCs for CVE-2026-54230

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III. Intelligence Information for CVE-2026-54230

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Vendor Advisories for CVE-2026-54230 (3)

Same Patch Batch · Red Hat · 2026-06-13 · 4 CVEs total

CVE-2026-54228 7.8 HIGH Abrt: toctou race condition in abrt-dbus setelement allows arbitrary file writes to dump d
CVE-2026-54229 7.0 HIGH Abrt: chownproblemdir succeeds during active post-create event processing due to inadequat
CVE-2026-54231 5.5 MEDIUM Abrt: unsanitized systemd journal content written to dump directory files enables content

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-59

V. Comments for CVE-2026-54230

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