{"id":"EUVD-2026-117798","revision":"c1b362731d624fb9909bc8bce60427f1","records":[{"revision":"c1b362731d624fb9909bc8bce60427f1","observedAt":"2026-11-07T14:30:06.652+00:00","statement":{"source":"euvd","id":"EUVD-2026-117798","aliases":["CVE-2026-77622","GHSA-663m-7x7m-g4fw"],"title":"Sliver is a command and control framework. Prior to 1.7.6, an HTTP(S) listener using the PNG encoder accepts attacker-controlled PNG dimensions without an effective decoded-size or pixel limit in util/encoders/images.go, while the listener …","description":"Sliver is a command and control framework. Prior to 1.7.6, an HTTP(S) listener using the PNG encoder accepts attacker-controlled PNG dimensions without an effective decoded-size or pixel limit in util/encoders/images.go, while the listener nonce space implemented in server/encoders/encoders.go is small enough to search remotely. An unauthenticated attacker who identifies a valid nonce can submit a highly compressed image to PNGEncoder.Decode, where it expands during png.Decode, exhausting server memory and causing a complete loss of availability. This vulnerability is fixed in 1.7.6.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2,"severity":null}],"references":["https://github.com/BishopFox/sliver/security/advisories/GHSA-663m-7x7m-g4fw","https://github.com/BishopFox/sliver/commit/80273462bd8b2a3cd724d2d6d0301a0cabfa977d","https://github.com/BishopFox/sliver/releases/tag/v1.7.6"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117798","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Nov 5, 2026, 8:52:39 PM","dateUpdated":"Nov 5, 2026, 8:52:39 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. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-117798","identifiers":["EUVD-2026-117798","CVE-2026-77622","GHSA-663m-7x7m-g4fw"]},"retained":false,"historicalAffected":[]}],"coverage":[]}