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Vulnerabilities

Vulnerability · CVE-2025-47775

Bullfrog's DNS over TCP bypasses domain filtering

Published May 14, 2025 · catalog updated Sep 10, 2026 · Bullfrog's DNS over TCP

Check if you run it

No confirmed exploitation is on record for CVE-2025-47775. EPSS is 0.49%. Act only if a listed version of Bullfrog's DNS over TCP is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Bullfrog's DNS over TCP).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.49%
Remediation
Version ranges on file
Affected products
GitHub Actions bullfrogsec/bullfrog · vendor bullfrogsec bullfrog < 0.8.4

Bullfrog is a GithHb Action to block unauthorized outbound traffic in GitHub workflows. Prior to version 0.8.4, using tcp breaks blocking and allows DNS exfiltration. This can result in sandbox bypass. Version 0.8.4 fixes the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • GitHub Actions bullfrogsec/bullfrog0 → 0.8.4
  • vendor bullfrogsec bullfrog < 0.8.4< 0.8.4

How to fix CVE-2025-47775

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-47775. EPSS is 0.49%. Act only if a listed version of Bullfrog's DNS over TCP is installed.

Which versions are affected?

Compare what you have installed with bullfrogsec bullfrog < 0.8.4 < 0.8.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-201. EPSS 0.49%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 15, 2025 · GitHub Advisory Database

    Detected

    ### Summary Using tcp breaks blocking and allows DNS exfiltration. ### PoC ### Impact sandbox bypass ![image](https://github.com/user-attachments/assets/fba18a17-2d49-48cd-9aae-713e95b5270d)

  2. Sep 10, 2026 · GitHub Advisory Database

    Fix available

    bullfrogsec/bullfrog fixed in 0.8.4

  3. Sep 10, 2026 · GitHub Advisory Database

    Fix available

    bullfrogsec/bullfrog fixed in 0.8.4

  4. Sep 10, 2026 · GitHub Advisory Database

    Updated

    ### Summary Using tcp breaks blocking and allows DNS exfiltration. ### PoC ### Impact sandbox bypass ![image](https://github.com/user-attachments/assets/fba18a17-2d49-48cd-9aae-713e95b5270d)

Sources

  • CVE.orgVulnerability recordCVE-2025-47775

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-47775

    30-day exploitation probability 0.5%

    first.org
  • EUVDVulnerability recordEUVD-2025-28122

    Bullfrog is a GithHb Action to block unauthorized outbound traffic in GitHub workflows. Prior to version 0.8.4, using tcp breaks blocking and allows DNS exfiltration. This can result in sandbox bypass. Version 0.8.4 fixes the issue.

    euvd.enisa.europa.eu
  • GitHub Advisory DatabasePackage advisoryGHSA-m32f-fjw2-37v3

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • OpenSSF OSV / OSV ScannerPackage advisoryGHSA-m32f-fjw2-37v3

    Bullfrog's DNS over TCP bypasses domain filtering

    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.