{"id":"CVE-2026-77622","revision":"c5cf6ec24a464c86b86272c69caec594","records":[{"revision":"c5cf6ec24a464c86b86272c69caec594","observedAt":"2026-11-06T21:03:22.533+00:00","statement":{"source":"nvd","id":"CVE-2026-77622","aliases":[],"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":"2026-11-05T21:18:53.89+00:00","modifiedAt":"2026-11-05T21:18:53.89+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.2,"severity":"HIGH"}],"references":["https://github.com/BishopFox/sliver/commit/80273462bd8b2a3cd724d2d6d0301a0cabfa977d","https://github.com/BishopFox/sliver/releases/tag/v1.7.6","https://github.com/BishopFox/sliver/security/advisories/GHSA-663m-7x7m-g4fw"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77622","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Received","weaknesses":["CWE-770"],"productCriteria":[],"sourceDates":{"published":"2026-11-05T21:18:53.890","lastModified":"2026-11-05T21:18:53.890"},"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-2026-77622","identifiers":["CVE-2026-77622"]},"retained":false,"historicalAffected":[]}],"coverage":[]}