{"schema":"threatline.record/2","record":{"id":"CVE-2026-113436","aliases":["GHSA-29cr-8477-rg6r"],"summary":"Quadratic bignum parsing of Content-Length and Host port values in Bandit","details":"Inefficient Algorithmic Complexity vulnerability in the header integer parser of mtrudel bandit allows an unauthenticated remote attacker to consume server CPU via a content-length value or a Host or :authority port made of thousands of digits.\n\nBandit.Headers.parse_integer/2 in lib/bandit/headers.ex builds the number one digit at a time with no limit on the digit count, allocating a new bignum at each step, so one value costs time quadratic in its length. It runs on raw request input over HTTP/1 and HTTP/2, before any range check. Over HTTP/2, a 4,000-digit value can be stored once in the HPACK dynamic table and re-sent on each new stream for about one byte: 124 KB of traffic kept the server busy for 27.9 s.\n\nThis issue affects bandit: from 1.0.0-pre.7 before 1.14.0.","categories":["Unclassified"],"product":"bandit","vendor":"mtrudel","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-113436","source_modified_at":"2026-10-26T15:35:51.556Z","fetched_at":"2026-10-26T19:10:57.178988Z","product":"bandit","vendor":"mtrudel","versions":[{"lessThan":"1.14.0","status":"affected","version":"1.0.0-pre.7","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-113436","source_modified_at":"2026-10-26T15:35:51.556Z","fetched_at":"2026-10-26T19:10:57.178988Z","product":"bandit","vendor":"mtrudel","versions":[{"lessThan":"220b9dfd27f9a21305be2afc75cbe585ddc24e7a","status":"affected","version":"e0c8c0c30af9b0f57d8aafac37ddd9294363a8be","versionType":"git"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-113436","source_modified_at":"2026-10-26T15:35:51.556Z","fetched_at":"2026-10-26T19:10:57.178988Z","package":{"name":"bandit","ecosystem":null},"version":"1.14.0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-113436","source_modified_at":"2026-10-26T15:35:51.556Z","fetched_at":"2026-10-26T19:10:57.178988Z","package":{"name":"bandit","ecosystem":null},"version":"220b9dfd27f9a21305be2afc75cbe585ddc24e7a","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-26T13:31:35.033Z","modified_at":"2026-10-26T15:35:51.556Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-113436","fetched_at":"2026-10-26T19:10:57.178988Z","source_modified_at":"2026-10-26T15:35:51.556Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/mtrudel/bandit/security/advisories/GHSA-29cr-8477-rg6r","tags":["vendor-advisory","related"]},{"source":"CVE List","url":"https://cna.erlef.org/cves/CVE-2026-113436.html","tags":["related"]},{"source":"CVE List","url":"https://osv.dev/vulnerability/EEF-CVE-2026-113436","tags":["related"]},{"source":"CVE List","url":"https://github.com/mtrudel/bandit/commit/e0c8c0c30af9b0f57d8aafac37ddd9294363a8be","tags":["related"]},{"source":"CVE List","url":"https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-26T15:12:04.626946Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-26T15:35:51.556Z","content_hash":"c79e76f07cd650c44a585783a66aab8320c1e03fcae906b4ec73fc7d88e72acc"}}