Critical Command Execution Flaw in PHP_CodeSniffer Affects Fedora Users

Linuxsecurity

Critical Command Execution Flaw in PHP_CodeSniffer Affects Fedora Users

First seen 15 Aug 2026, 20:20 UTC • •72.0

Article Content

1 / 3

Browse articles

ThreatCluster •August 16, 2026 at 19:52 UTC

•A critical command execution vulnerability affects PHP_CodeSniffer 4.0.4.
•Users of Gitblame, Hgblame, or Svnblame reports are particularly at risk.
•Immediate updates are recommended for Fedora 43 and Fedora 44 users.

A critical command execution vulnerability has been identified in PHP_CodeSniffer version 4.0.4, affecting users of the Gitblame, Hgblame, or Svnblame reports. The flaw allows potential attackers to execute arbitrary commands on affected systems. All users are advised to update their installations immediately to mitigate risks. The vulnerability was disclosed on August 6, 2026, and is part of a security release aimed at enhancing the software's compliance with coding standards. Users are urged to review their Linux privileges to limit potential compromise and escalation. The flaw specifically impacts Fedora 43 and Fedora 44 users. The update can be installed using the 'dnf' update program. This incident highlights the importance of maintaining updated software to prevent exploitation.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Answers cite the sources they use

Updated 56d ago How this analysis works

Timeline

2026-08-06

PHP_CodeSniffer version 4.0.4 released

A security release was issued to address a critical command execution flaw affecting certain report users.

2026-08-15

Security advisory published

Fedora issued an advisory urging users to update PHP_CodeSniffer to mitigate the command execution vulnerability.

More articles in this cluster (2)

Threat Graph

2 entities, 1 inferred relationships (STIX 2.1).

The full threat graph for this incident is free in the 7-day Starter trial.

Create free account

No card · 30 seconds

See everything included

Organization (1)

Fedora

Affected Platform (1)

Linux

Relationships

Linux related to Fedora

Following this threat?

Track Fedora in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed

Continue Reading

CVE-2015-3306 Exploited in ProFTPD FTP Servers CVE-2015-3306, a vulnerability in ProFTPD 1.3.5, allows remote attackers to read and write arbitrary files using the SITE CPFR and SITE CPTO commands. This exploit can lead to unauthorized access and potential remote code execution, as the commands are executed with the privileges of the ProFTPD service. Active…

CISA Mandates Urgent Patching of Five Critical Flaws Exploited by Flax Typhoon The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has ordered federal agencies to patch five critical vulnerabilities by October 11, 2026, following exploitation by the China-linked hacking group Flax Typhoon. The vulnerabilities, added to CISA's Known Exploited Vulnerabilities (KEV) catalog, include…