Dashboard / CVE-2026-50221

CVE-2026-50221

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 61/100
Published: 2026-06-23 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: Low
VI: Low
VA: Low

Description

In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host, X-Container-Device, X-Delete-At-Host, X-Delete-At-Device) from client requests before forwarding them to object-servers. An authenticated user with write access can inject these headers to redirect container update requests to an attacker-controlled server, enabling server-side request forgery. The SSRF requests expose internal cluster metadata including storage policy indexes, partition mappings, device names, and when at rest encryption is enabled, cipher text and initialization vectors for the container-level encryption key. The attacker can also cause "ghost listings" in arbitrary containers via the shard-range redirect mechanism.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
openstack swift 2.0.0 – 2.35.3

References & Advisories (4)

https://www.openwall.com/lists/oss-security/2026/06/23/5
Mailing List Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/06/23/5
Mailing List Patch Third Party Advisory
https://launchpad.net/bugs/2150261
Exploit Issue Tracking Vendor Advisory

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.22%
Raw Score 0.002170
Percentile 12.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00217
2026-10-28
0.00217

Intelligence Sources

nvd ref →

External Links