Egress Policy Bypass via DNS over HTTPS (DoH) in Harden-Runner (Community Tier)

Summary A vulnerability exists in the Community Tier of Harden-Runner that allows bypassing the egress-policy: block network restriction using DNS over HTTPS DoH. Harden-Runner secures GitHub Actions workflows on runners by applying network policies, including an allowed-endpoints configuration...

PT-2026-25988

Name of the Vulnerable Software and Affected Versions Harden-Runner versions 2.15.1 and below Description Harden-Runner, a CI/CD security agent functioning as an EDR for GitHub Actions runners, contains a DNS over HTTPS DoH issue. This allows attackers to circumvent network restrictions imposed b...

Exploit for Improper Input Validation in Toolkit_Project Toolkit

gha-exploit-guard Standalone GitHub Action that scans GitHub...

org.webjars.npm:actions__core (>=1.10.0, <=1.11.1), org.webjars.npm:actions__http-client (>=2.2.1, <=2.2.3) +14 more potentially affected by CVE-2026-2229 via org.webjars.npm:undici (>=4.12.2, <=5.29.0)

org.webjars.npm:undici MAVEN version =4.12.2, =1.10.0, =2.2.1, =0.1.16, =0.1.28 - org.webjars.npm:elasticelasticsearch 8.6.0 - org.webjars.npm:elastictransport 8.3.1 - org.webjars.npm:firebase 10.13.0 - org.webjars.npm:firebaseauth 1.7.7 - org.webjars.npm:firebaseauth-compat 0.5.12 -...

org.webjars.npm:actions__core (>=1.10.0, <=1.11.1), org.webjars.npm:actions__http-client (>=2.2.1, <=2.2.3) +14 more potentially affected by CVE-2026-1525 via org.webjars.npm:undici (>=4.12.2, <=5.29.0)

org.webjars.npm:undici MAVEN version =4.12.2, =1.10.0, =2.2.1, =0.1.16, =0.1.28 - org.webjars.npm:elasticelasticsearch 8.6.0 - org.webjars.npm:elastictransport 8.3.1 - org.webjars.npm:firebase 10.13.0 - org.webjars.npm:firebaseauth 1.7.7 - org.webjars.npm:firebaseauth-compat 0.5.12 -...

EUVD-2026-11331

xygeni-action v5 tag poisoned with C2 backdoor...

xygeni-action v5 tag poisoned with C2 backdoor

Description On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main branch. However, the attacker used the...

GHSA-F8Q5-H5QH-33MH xygeni-action v5 tag poisoned with C2 backdoor

Description On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main branch. However, the attacker used the...

CVE-2026-31976 xygeni-action v5 tag poisoned with C2 backdoor

xygeni-action is the GitHub Action for Xygeni Scanner. On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main...

CVE-2026-31976 xygeni-action v5 tag poisoned with C2 backdoor

xygeni-action is the GitHub Action for Xygeni Scanner. On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main...

CVE-2026-31976

xygeni-action is the GitHub Action for Xygeni Scanner. On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main...

CVE-2026-31976

xygeni-action, the GitHub Action for Xygeni Scanner, was abused via tag poisoning: compromised credentials moved the v5 tag to a malicious commit in a PR window (Mar 3–10, 2026). Workflows referencing xygeni-action@v5 could execute a C2 implant on CI runners for up to 180 seconds. The issue stems...

CVE-2026-31976 xygeni-action v5 tag poisoned with C2 backdoor

xygeni-action is the GitHub Action for Xygeni Scanner. On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main...

CVE-2026-31900 Black's vulnerable version parsing leads to RCE in GitHub Action

Black is the uncompromising Python code formatter. Black provides a GitHub action for formatting code. This action supports an option, usepyproject: true, for reading the version of Black to use from the repository pyproject.toml. A malicious pull request could edit pyproject.toml to use a direct...

CVE-2026-31900

CVE-2026-31900 concerns the Black Python code formatter used in a GitHub Action. The vulnerability arises when the action reads the Black version from a repository’s pyproject.toml (use_pyproject: true). A malicious pull request could alter pyproject.toml to reference a direct URL to a malicious ...

CVE-2026-31852

Jellyfin is an open-source media system. The code-quality.yml GitHub Actions workflow in jellyfin/jellyfin-ios is vulnerable to arbitrary code execution via pull requests from forked repositories. Due to the workflow's elevated permissions nearly all write permissions, this vulnerability enables...

CVE-2026-31976: Embedded Malicious Code

xygeni-action is the GitHub Action for Xygeni Scanner. On March 3, 2026, an attacker with access to compromised credentials created a series of pull requests 46, 47, 48 injecting obfuscated shell code into action.yml. The PRs were blocked by branch protection rules and never merged into the main...

CVE-2026-31852: Improper Privilege Management

Jellyfin is an open-source media system. The code-quality.yml GitHub Actions workflow in jellyfin/jellyfin-ios is vulnerable to arbitrary code execution via pull requests from forked repositories. Due to the workflow's elevated permissions nearly all write permissions, this vulnerability enables...

Jellyfin 安全漏洞

Jellyfin is an open-source free software media system developed by Jellyfin. It allows you to control the management and streaming of media. It serves as a replacement for proprietary products like Emby and Plex, enabling the delivery of media from proprietary servers to end-user devices through...

GO-2026-4574 ZITADEL has potential SSRF via Actions in github.com/zitadel/zitadel

ZITADEL has potential SSRF via Actions in github.com/zitadel/zitadel. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability scanners, please suggest...