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CVE-2026-115374

CVE-2026-115374 · Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Unsigned Header Bypass in Presigned S3 Upload URLs

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.1 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • incus

    Versions
    • ≥ 7.0.0, < 7.0.2: Affected (semver)
    • 7.0.2: Not affected (semver)
    • ≥ 7.1.0, < 7.5.0: Affected (semver)
    • 7.5.0: Not affected (semver)

    Update to 7.0.2; Update to 7.5.0

  • incus Debian:14

    Versions
    • 6.0.4-2
    • 6.0.4-3
    • 6.0.5-1
    • 6.0.5-2
    • 6.0.5-3
    • 6.0.5-4
    • 6.0.5-5
    • 6.0.5-6
    • 6.0.5-7
    • 6.0.5-8
    • 6.0.6-1
    • 6.0.6-2
    • 6.0.6-3
    • 6.14.0-1~exp1
    • 6.15.0-1~exp1
    • 6.16.0-1~exp1
    • 6.17.0-1~exp1
    • 6.20.0-1~exp1
    • 6.21.0-1~exp1
    • 6.22.0-1~exp1
    • 6.23.0-1~exp1
    • 7.0.0-1
    • 7.0.0-1~bpo13+1
    • 7.0.0-2
    • 7.0.0-2~bpo13+1
    • 7.0.0-3
    • 7.0.0-4
    • 7.0.0-5
    • 7.0.0-5~bpo13+1
    • 7.0.1-1
    • 7.0.1-1~bpo13+1
    • 7.0.1-2
    • 7.0.1-2~bpo13+1
    • 7.0.1-3
    • 7.0.1-3~bpo13+1
    • 7.0.1-4
    • 7.0.1-5~bpo13+1
    Affected ranges
    • ECOSYSTEM: < 7.0.1-5

    Update to 7.0.1-5

Original sources

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