{"id":"GHSA-jcvh-xf52-2cwm","revision":null,"records":[{"revision":"5926b37340174905a42ffdc1018f18f5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73232","aliases":[],"title":"ffuf denial of service (OOM) via HTTP response decompression bomb","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.","state":0,"publishedAt":"2026-08-11T19:32:48.56+00:00","modifiedAt":"2026-08-12T12:59:07.465+00:00","affected":[{"ecosystem":"Vendor product","name":"ffuf","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ffuf\",\n                    \"product\": \"ffuf\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.2.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/ffuf/ffuf/security/advisories/GHSA-jcvh-xf52-2cwm","https://github.com/ffuf/ffuf/pull/897","https://github.com/ffuf/ffuf/commit/fb0da86c60443b0dddbc9a86e91e3a6487dff79b","https://github.com/ffuf/ffuf/releases/tag/v2.2.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73232","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73232","identifiers":["CVE-2026-73232"]},"retained":false,"historicalAffected":[]},{"revision":"f113017c92d24d24830b7ae8aea30a4f","observedAt":"2026-11-11T17:11:11.386+00:00","statement":{"source":"euvd","id":"EUVD-2026-56926","aliases":["CVE-2026-73232","GHSA-jcvh-xf52-2cwm"],"title":"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 whi…","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":null}],"references":["https://github.com/ffuf/ffuf/security/advisories/GHSA-jcvh-xf52-2cwm","https://github.com/ffuf/ffuf/pull/897","https://github.com/ffuf/ffuf/commit/fb0da86c60443b0dddbc9a86e91e3a6487dff79b","https://github.com/ffuf/ffuf/releases/tag/v2.2.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-56926","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 11, 2026, 7:32:48 PM","dateUpdated":"Aug 12, 2026, 12:59:07 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. 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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.","state":0,"publishedAt":"2026-08-11T20:18:48.543+00:00","modifiedAt":"2026-09-18T20:09:01.757+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/ffuf/ffuf/commit/fb0da86c60443b0dddbc9a86e91e3a6487dff79b","https://github.com/ffuf/ffuf/pull/897","https://github.com/ffuf/ffuf/releases/tag/v2.2.0","https://github.com/ffuf/ffuf/security/advisories/GHSA-jcvh-xf52-2cwm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73232","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-409"],"productCriteria":[],"sourceDates":{"published":"2026-08-11T20:18:48.543","lastModified":"2026-09-18T20:09:01.757"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-73232","identifiers":["CVE-2026-73232"]},"retained":false,"historicalAffected":[]},{"revision":"0115fcf7c03b4287bb943275c6f74ebf","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-jcvh-xf52-2cwm","aliases":["CVE-2026-73232","GO-2026-6369"],"title":"ffuf denial of service (OOM) via HTTP response decompression bomb","description":"### Summary\n\n  A malicious or attacker-controlled target server can crash ffuf with an out-of-memory condition by returning a compressed HTTP response that decompresses to a very large body (a decompression\n  bomb). This works against default usage with no special flags.\n\n  ### Details\n\n  The response body size guard in `pkg/runner/simple.go` only checks the server-supplied `Content-Length` header, which reflects the *compressed* size and is absent for chunked responses or when Go's\n  `net/http` transport transparently decompresses the body. After that check, `io.ReadAll` reads the entire *decompressed* stream into memory with no upper bound, so a small compressed body that\n  expands to gigabytes causes unbounded allocation and the process is terminated by the OS OOM killer.\n\n  The guard is bypassed in three independent ways:\n\n  1. **gzip (default configuration):** the transport requests gzip on its own and transparently decompresses the response, stripping `Content-Encoding` and `Content-Length`, so the size check is\n  skipped and the already-decoded body is read unbounded.\n  2. **brotli/deflate (or gzip with headers preserved):** `Content-Length` reflects the small compressed size and passes the check; the body is then manually decompressed into an unbounded\n  `io.ReadAll`.\n  3. **chunked transfer encoding:** no `Content-Length` header is present, so the numeric parse fails and the check is skipped entirely.\n\n  ### Impact\n\n  Denial of service against the operator running ffuf. A single hostile endpoint can OOM-kill ffuf on a default invocation such as `ffuf -u http://target/FUZZ -w wordlist.txt`, discarding all\n  in-memory scan results. Because the crash recurs on every attempt against that target, a server can effectively make itself immune to ffuf-based content discovery. There is no confidentiality or\n  integrity impact; only the availability of the scanning process is affected. CVSS 3.1 base score 7.5 (`AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`), CWE-409 (Improper Handling of Highly Compressed Data).\n\n  ### Patches\n\n  Fixed in **ffuf 2.2.0** (https://github.com/ffuf/ffuf/releases/tag/v2.2.0) via https://github.com/ffuf/ffuf/pull/897. The response body read is now bounded with `io.LimitReader` to the existing 5\n  MB download cap regardless of `Content-Encoding`, chunked framing, or transport-level decompression; responses exceeding the cap are dropped rather than read into memory. Upgrade to 2.2.0 or later.\n\n  ### Workarounds\n\n  There is no configuration flag that fully mitigates this in affected versions. Until upgrading, limit ffuf usage against untrusted or attacker-influenced targets. Upgrading to 2.2.0 is the fix.\n\n  ### Credits\n\n  Reported by **João Tricta** (Hakai Offensive Security).","state":0,"publishedAt":"2026-09-03T18:02:09+00:00","modifiedAt":"2026-09-10T15:25:52.6985809+00:00","affected":[{"ecosystem":"Go","name":"github.com/ffuf/ffuf/v2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.2.0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/ffuf/ffuf","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"1.5.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/ffuf/ffuf/security/advisories/GHSA-jcvh-xf52-2cwm","https://nvd.nist.gov/vuln/detail/CVE-2026-73232","https://github.com/ffuf/ffuf/pull/897","https://github.com/ffuf/ffuf/commit/fb0da86c60443b0dddbc9a86e91e3a6487dff79b","https://github.com/ffuf/ffuf","https://github.com/ffuf/ffuf/releases/tag/v2.2.0"],"sourceUrl":"https://github.com/advisories/GHSA-jcvh-xf52-2cwm","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-jcvh-xf52-2cwm","identifiers":["GHSA-jcvh-xf52-2cwm","CVE-2026-73232","GO-2026-6369"]},"retained":false,"historicalAffected":[]},{"revision":"79fce944d9af40ca99599730cdcd9e4d","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6369","aliases":["CVE-2026-73232","GHSA-jcvh-xf52-2cwm"],"title":"ffuf denial of service (OOM) via HTTP response decompression bomb in github.com/ffuf/ffuf","description":"ffuf denial of service (OOM) via HTTP response decompression bomb in github.com/ffuf/ffuf","state":0,"publishedAt":"2026-09-10T14:48:42+00:00","modifiedAt":"2026-09-10T15:15:13.5505996+00:00","affected":[{"ecosystem":"Go","name":"github.com/ffuf/ffuf","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/ffuf/ffuf/v2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.2.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/ffuf/ffuf/security/advisories/GHSA-jcvh-xf52-2cwm","https://nvd.nist.gov/vuln/detail/CVE-2026-73232","https://github.com/ffuf/ffuf/commit/fb0da86c60443b0dddbc9a86e91e3a6487dff79b","https://github.com/ffuf/ffuf/pull/897","https://github.com/ffuf/ffuf/releases/tag/v2.2.0"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6369","license":"OSV · upstream source license applies","key":"osv:GO-2026-6369","identifiers":["GO-2026-6369","CVE-2026-73232","GHSA-jcvh-xf52-2cwm"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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