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CVE-2026-54330 Ceph RGW SigV4 handler accepts unsigned x-amz-* headers on presigned requests, allowing privilege escalation

🗓️ 27 Aug 2026 20:59:24Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 82 Views

Ceph RGW SigV4 accepts unsigned x-amz-* headers on presigned requests enabling privilege escalation.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cbl_mariner
CBLMariner
CVE-2026-54330 affecting package ceph for versions less than 18.2.2-13
19 Sep 202602:59
–cbl_mariner
circl
Circl
CVE-2026-54330
20 Aug 202614:25
–circl
cve
CVE
CVE-2026-54330
27 Aug 202620:59
–cve
debiancve
Debian CVE
CVE-2026-54330
27 Aug 202620:59
–debiancve
euvd
EUVD
EUVD-2026-67276
27 Aug 202620:59
–euvd
fedora
Fedora
[SECURITY] Fedora 43 Update: ceph-19.2.6-1.fc43
22 Aug 202601:12
–fedora
fedora
Fedora
[SECURITY] Fedora 44 Update: ceph-20.2.4-1.fc44
22 Aug 202601:26
–fedora
nessus
Tenable Nessus
Fedora 44 : ceph (2026-7de7d03796)
22 Aug 202600:00
–nessus
nessus
Tenable Nessus
Fedora 43 : ceph (2026-ebffec502b)
22 Aug 202600:00
–nessus
nessus
Tenable Nessus
Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : Ceph vulnerability (USN-8867-1)
6 Oct 202600:00
–nessus
Rows per page
[
  {
    "vendor": "ceph",
    "product": "ceph",
    "versions": [
      {
        "version": ">= 19.0.0, < 19.2.6",
        "status": "affected"
      },
      {
        "version": ">= 20.0.0, < 20.2.4",
        "status": "affected"
      }
    ]
  }
]

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27 Aug 2026 20:59Current
CVSS 3.18.1
EPSS0.00367
SSVC
82