Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ffuf | ffuf | < 2.2.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ffuf | 2.2.1-1 | — |
| Debian 13 | ffuf | No fix yet | — |
| Debian 12 | ffuf | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | ffuf | No fix yet | — |
| Ubuntu 26.04 LTS | ffuf | No fix yet | — |
| Ubuntu 22.04 LTS | ffuf | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | ffuf | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | govulncheck-vulndb | 0.0.20260916T180043-160000.1.1 | SUSE-SU-2026:23863-1, SUSE-SU-2026:23855-1 |
| SLES 16.0 | govulncheck-vulndb | 0.0.20260916T180043-160000.1.1 | SUSE-SU-2026:23863-1, SUSE-SU-2026:23855-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260916T180043-160000.1.1 | openSUSE-SU-2026:21897-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/ffuf/ffuf | <= 1.5.0 | — | GHSA-jcvh-xf52-2cwm |
| Go | github.com/ffuf/ffuf | all versions | — | GO-2026-6369 |
| Go | github.com/ffuf/ffuf/v2 | < 2.2.0 | 2.2.0 | GHSA-jcvh-xf52-2cwm |
Advisories 3
- SUSE-SU-2026:23863-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Sep 27, 2026
- SUSE-SU-2026:23855-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Sep 27, 2026
- openSUSE-SU-2026:21897-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Sep 25, 2026