ffuf denial of service (OOM) via HTTP response decompression bomb

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-73232
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-11 20:18:48 UTC
Updated2026-08-12 14:18:38 UTC
Descriptionffuf 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.004460000 probability, percentile 0.368950000 (date 2026-08-12)

Problem Types: CWE-409 | CWE-409 CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ffuf Ffuf affected < 2.2.0 Not specified

References

ReferenceSourceLinkTags
github.com/ffuf/ffuf/releases/tag/v2.2.0 [email protected] github.com
github.com/ffuf/ffuf/security/advisories/GHSA-jcvh-xf52-2cwm [email protected] github.com
github.com/ffuf/ffuf/commit/fb0da86c60443b0dddbc9a86e91e3a6487dff79b [email protected] github.com
github.com/ffuf/ffuf/pull/897 [email protected] github.com
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