Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Unsigned Header Bypass in Presigned S3 Upload URLs
Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a signature verification flaw in its built-in S3 server that allows presigned URL holders to inject unsigned x-amz-* headers. Attackers can add an unsigned X-Amz-Copy-Source header to a presigned upload URL to copy other bucket objects onto the granted key, disclosing their contents and ETags.
CVE-2026-115374
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-115374
incus
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "lxc",
"product": "incus",
"versions": [
{
"status": "affected",
"version": "7.0.0",
"lessThan": "7.0.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "7.0.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "7.1.0",
"lessThan": "7.5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "7.5.0",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/lxc/incus/v7/cmd/incusd",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-115374
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #53033 · Revision 1
- Added to Heist Feed
- Publisher date