CVE-2026-44590

Sherlock hunts down social media accounts by username across social networks. Prior to 0.16.1, the GitHub Actions workflow validatemodifiedtargets.yml is vulnerable to command injection via the pullrequesttarget trigger. Any GitHub user can execute arbitrary commands on the CI runner and exfiltra...

CVE-2026-44590 Sherlock: Command Injection via pull_request_target in validate_modified_targets.yml

Sherlock hunts down social media accounts by username across social networks. Prior to 0.16.1, the GitHub Actions workflow validatemodifiedtargets.yml is vulnerable to command injection via the pullrequesttarget trigger. Any GitHub user can execute arbitrary commands on the CI runner and exfiltra...

VulnCheck KEV: CVE-2026-45321

On 2026-05-11, between approximately 19:20 and 19:26 UTC, 84 malicious versions across 42 @tanstack/ packages were published to the npm registry. The publishes were authenticated via the legitimate GitHub Actions OIDC trusted-publisher binding for TanStack/router, but the publish workflow itself...

EUVD-2026-31902

Vowpal Wabbit is a machine learning system. The workflow .github/workflows/pythonchecks.yml embeds $ github.event.pullrequest.title directly inside double-quoted bash strings in four separate steps across four jobs, each passing it as a CLI argument to the Python test script...

Malicious code in ai3 (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 83540d952123c5d1199bbec1a72d0c4c49c428f309b9d68df45e307b852000a7 package.json declares "preinstall": "./.github/scripts/precheck", which points at a 976,568-byte precompiled Linux ELF x86-64 binary shipped inside t...

PT-2026-43300

Vowpal Wabbit is a machine learning system. The workflow .github/workflows/python checks.yml embeds $ github.event.pull request.title directly inside double-quoted bash strings in four separate steps across four jobs, each passing it as a CLI argument to the Python test script run tests model gen...

Megalodon GitHub Attack Targets 5,561 Repos with Malicious CI/CD Workflows

Cybersecurity researchers have disclosed details of a new automated campaign called Megalodon that has pushed 5,718 malicious commits to 5,561 GitHub repositories within a six-hour window. "Using throwaway accounts and forged author identities build-bot, auto-ci, ci-bot, pipeline-bot, the attacke...

Linux Distros Unpatched Vulnerability : CVE-2026-45793

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Composer is a dependency Manager for the PHP language. Prior to 1.10.28, 2.2.28, and 2.9.8, Composer\IO\BaseIO::loadConfiguration validates GitHub OAuth tokens...

gh: GitHub Actions log output in `gh run view` allows terminal escape sequence injection

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Malicious code in @tiledesk/tiledesk-server (npm)

@tiledesk/tiledesk-server version 2.18.12 is a compromised release of the legitimate Tiledesk customer support platform package. This version was injected with a CI pipeline backdoor as part of the megalodon campaign — a mass GitHub repository backdooring operation targeting CI/CD runner...

MAL-2026-4228 Malicious code in @tiledesk/tiledesk-server (npm)

@tiledesk/tiledesk-server version 2.18.12 is a compromised release of the legitimate Tiledesk customer support platform package. This version was injected with a CI pipeline backdoor as part of the megalodon campaign — a mass GitHub repository backdooring operation targeting CI/CD runner...

Mini Shai Hulud: Compromised @antv npm packages enable CI/CD credential theft

In this article 1. Attack chain overview 1. Technical analysis 2. How GitHub took action to prevent further harm 2. Mitigation and protection guidance 1. Microsoft Defender XDR Detections 2. Microsoft Defender XDR Threat analytics 3. Advanced hunting 4. Indicators of Compromise IOC 3. References ...

Mini Shai Hulud: Compromised @antv npm packages enable CI/CD credential theft

In this article 1. Attack chain overview 1. Technical analysis 2. How GitHub took action to prevent further harm 2. Mitigation and protection guidance 1. Microsoft Defender XDR Detections 2. Microsoft Defender XDR Threat analytics 3. Advanced hunting 4. Indicators of Compromise IOC 3. References ...

Command Injection

Overview setup-php is a Setup PHP for use with GitHub Actions Affected versions of this package are vulnerable to Command Injection via the process that resolves PHP version from repository-controlled files such as .php-version, composer.lock, or composer.json and incorporates the value into the...

GHSA-PQWM-Q9PV-PH8R Setup PHP: Command Injection in Repository-Derived PHP Version Resolution

Summary A command injection vulnerability was identified in shivammathur/setup-php when the action resolves the PHP version from repository-controlled files and uses that value while generating the platform setup script. In affected versions, setup-php may read the PHP version from: - .php-versio...

CVE-2026-45793

Github Actions issued GITHUBTOKEN disclosure in GitHub Actions logs...

GHSA-F9F8-RM49-7JV2 Github Actions issued GITHUB_TOKEN disclosure in GitHub Actions logs

Summary Composer leaks the full contents of tokens configured as GitHub OAuth tokens if they do not match Composer's expected format for such tokens to stderr. GitHub has introduced a new format for GitHub Actions GITHUBTOKEN values. These tokens are validated in the same way by Composer on GitHu...

Github Actions issued GITHUB_TOKEN disclosure in GitHub Actions logs

Summary Composer leaks the full contents of tokens configured as GitHub OAuth tokens if they do not match Composer's expected format for such tokens to stderr. GitHub has introduced a new format for GitHub Actions GITHUBTOKEN values. These tokens are validated in the same way by Composer on GitHu...

Popular GitHub Action Tags Redirected to Imposter Commit to Steal CI/CD Credentials

In yet another software supply chain attack, threat actors have compromised the popular GitHub Actions workflow, actions-cool/issues-helper , to run malicious code that harvests sensitive credentials and exfiltrates them to an attacker-controlled server. "Every existing tag in the repository has...

Malicious code in @antv/f-engine (npm)

Part of the Mini Shai-Hulud supply chain attack campaign in which a threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst. Each malicious version injects a preinstall hook that executes a 498KB obfuscated Bun...