{"apiVersion":"1.0","identifier":"CVE-2026-48756","description":"Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateCustomVolumeFromBackup` in `internal/server/storage/backend.go` contains an unguarded `*time.Time` dereference on the `ExpiresAt` field of every volume-snapshot entry in an imported custom-volume backup. An authenticated user with `can_create_storage_volumes` permission on any project can crash the `incusd` daemon by uploading a backup tarball whose `volume_snapshots[*].expires_at` field is absent. This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). Commit `985a1dedf9f3e7ba729c93b654905ed510de25c2` added `if s == nil` at the top of the loop body, but did not guard the adjacent `*snapshot.ExpiresAt` deref 19 lines later. Every other consumer of `Config.VolumeSnapshots[i].ExpiresAt` in this same file already gates the deref with a nil-check — the asymmetric guard is the bug. Version 7.1.0 contains an updated patch.","publishedAt":"2026-08-21T15:16:41","lastModifiedAt":"2026-08-21T22:16:38","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48756","cvssScore":2.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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","epssProbability":0.00226,"riskScore":0.21,"affectedProduct":"Incus","affectedVersions":"<7.1.0","vulnerabilityType":"Critical software","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-48756","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-48756","en":"https://www.redsauce.net/en/cves/CVE-2026-48756","fr":"https://www.redsauce.net/fr/cves/CVE-2026-48756","pt":"https://www.redsauce.net/pt/cves/CVE-2026-48756","de":"https://www.redsauce.net/de/cves/CVE-2026-48756","sk":"https://www.redsauce.net/sk/cves/CVE-2026-48756","el":"https://www.redsauce.net/el/cves/CVE-2026-48756"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-48756"}}