SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-9579

A flaw was found in the way Ceph Object Gateway would process cross-origin HTTP requests if the CORS policy was set to allow origin on a bucket.

HIGH 7.5EPSS 4.34%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A flaw was found in the way Ceph Object Gateway would process cross-origin HTTP requests if the CORS policy was set to allow origin on a bucket. A remote unauthenticated attacker could use this flaw to cause denial of service by sending a specially-crafted cross-origin HTTP request. Ceph branches 1.3.x and 2.x are affected.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
4.34% probability · 91th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20
Affected
redhat/ceph storage · redhat/ceph storage mon · redhat/ceph storage osd · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation
Source
secalert@redhat.com
EPSS trend
0%3%5%27 October 2026: 4.34%27 October 202627 October 2026

EPSS 4.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.