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

CVSS 7.0 · High EPSS 0.12% · P2

Possible ATT&CK Techniques 1AI

T1548.002 · Bypass User Account Control

Affected Version Matrix 3

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 6anyunknown
Red HatRed Hat Enterprise Linux 7anyaffected
Red HatRed Hat Enterprise Linux 8anyaffected
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: NVD (National Vulnerability Database)
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8

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 (2)

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

CVE-2026-542287.8 HIGHAbrt: toctou race condition in abrt-dbus setelement allows arbitrary file writes to dump d
CVE-2026-542297.0 HIGHAbrt: chownproblemdir succeeds during active post-create event processing due to inadequat
CVE-2026-542315.5 MEDIUMAbrt: unsanitized systemd journal content written to dump directory files enables content

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 6
Same vendor: Red Hat
Same weakness: CWE-59

V. Comments for CVE-2026-54230

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