CVE-2026-115374High· 7.1▾ TwilightA flaw was found in Incus. The built-in Simple Storage Service (S3) server does not properly verify request signatures, allowing an attacker with a presigned upload URL to inject unsigned request headers. By supplying an unauthorized copy …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 39.1 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 23.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
Last analysed / modified upstream
0.2%
0.2% → 0.2%
A flaw was found in Incus. The built-in Simple Storage Service (S3) server does not properly verify request signatures, allowing an attacker with a presigned upload URL to inject unsigned request headers. By supplying an unauthorized copy source header, an attacker can copy other storage bucket objects to an accessible destination key, leading to unauthorized information disclosure.
github.com/lxc/incus: incus: Information disclosure via unsigned headers in presigned S3 URLs. Released 2026-10-22, updated 2026-10-23.
Not affected:
Refer to the advisory for fix availability.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-116189High· 7.5github.com/rclone/rclone: rclone: Arbitrary code execution via self-update signature verification bypass (CVE-2026-116189)
CVE-2026-115373Medium· 6.3github.com/lxc/incus: Incus: Information disclosure via missing authorization check in operations endpoint (CVE-2026-115373)
CVE-2026-115378Medium· 5.8github.com/lxc/incus: Incus: Arbitrary file write on the host via recursive file pull (CVE-2026-115378)
CVE-2026-115372High· 8.5github.com/lxc/incus: Incus 7.3.0 before 7.5.0 Project Restriction Bypass via block.create_options (CVE-2026-115372)
CVE-2026-10579Critical· 9.8A flaw was found in Picketlink Federation SAML; the unsolcited response handler would accept forged assertions with no verification or validation, permitting an unauthed attacker to authenticate as any principal in any role
CVE-2026-116124High· 7.8libgsf: libgsf: Arbitrary code execution via heap-based buffer overflow in OLE2 parser (CVE-2026-116124)