ffuf denial of service (OOM) via HTTP response decompression bomb
Priority MEDIUM 40CWE-409Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
ffuf is a fast web fuzzer written in Go. Prior to 2.2.0, ffuf allows a malicious target server to cause an out-of-memory denial of service because the response size guard in pkg/runner/simple.go checks only the compressed Content-Length while io.ReadAll reads gzip, brotli, deflate, transparently decompressed, or chunked response bodies without a decompressed-size bound. This issue is fixed in version 2.2.0.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0063 50th percentileScored 2026-11-07
Fix Fixed ffuf (ffuf): 2.2.0github.com/ffuf/ffuf/v2 (Go): 2.2.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| ffuf | ffuf | before 2.2.0 | 2.2.0 | Patch available | CNA |
| — | github.com/ffuf/ffuf/v2 (Go) | before 2.2.0 | 2.2.0 | Patch available | GHSA-jcvh-xf52-2cwm |
| — | github.com/ffuf/ffuf (Go) | up to 1.5.0 | — | No fix listed | GHSA-jcvh-xf52-2cwm |
- ffuf Vendorffuf Affected before 2.2.0 Fixed in 2.2.0 Patch available CNA
- github.com/ffuf/ffuf/v2 (Go) Vendor— Affected before 2.2.0 Fixed in 2.2.0 Patch available GHSA-jcvh-xf52-2cwm
- github.com/ffuf/ffuf (Go) Vendor— Affected up to 1.5.0 Fixed in — No fix listed GHSA-jcvh-xf52-2cwm
Remediation
- Fix · CNA ffuf (ffuf) Fixed in 2.2.0
- Fix · GHSA-jcvh-xf52-2cwm github.com/ffuf/ffuf/v2 (Go) Fixed in 2.2.0 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73232
- 2026-10-03 Alias added: GHSA-jcvh-xf52-2cwm
- 2026-10-28 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2026-73232 · CVE Program
- CVE-2026-73232 · NVD
- FIRST EPSS
- GHSA-jcvh-xf52-2cwm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-73232 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences