Bullfrog's DNS over TCP bypasses domain filtering
Priority HIGH 70CWE-201Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-201.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00494 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed bullfrog (bullfrogsec): 0.8.4bullfrogsec/bullfrog (GitHub Actions): 0.8.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| bullfrogsec | bullfrog | before 0.8.4 | 0.8.4 | Patch available | CNA |
| — | bullfrogsec/bullfrog (GitHub Actions) | before 0.8.4 | 0.8.4 | Patch available | GHSA-m32f-fjw2-37v3 |
- bullfrog Vendorbullfrogsec Affected before 0.8.4 Fixed in 0.8.4 Patch available CNA
- bullfrogsec/bullfrog (GitHub Actions) Vendor— Affected before 0.8.4 Fixed in 0.8.4 Patch available GHSA-m32f-fjw2-37v3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bullfrogsec:bullfrog:*:*:*:*:*:*:*:* | before 0.8.4 | Vulnerable | bullfrogsec |
- cpe:2.3:a:bullfrogsec:bullfrog:*:*:*:*:*:*:*:* Versions before 0.8.4 Vulnerable ·bullfrogsec
Remediation
- Fix · CNA bullfrog (bullfrogsec) Fixed in 0.8.4
- Fix · GHSA-m32f-fjw2-37v3 bullfrogsec/bullfrog (GitHub Actions) Fixed in 0.8.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-47775
- 2026-10-03 Alias added: GHSA-m32f-fjw2-37v3
References
Sources
- CVE-2025-47775 · CVE Program
- CVE-2025-47775 · NVD
- FIRST EPSS
- GHSA-m32f-fjw2-37v3 · GitHub Advisory Database · CC BY 4.0
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