5.4

CVE-2026-50221: openstack swift Server-Side Request Forgery (SSRF)

CVSS: 5.4v3.1MediumAnalyzed
AliasesGHSA-h8rc-w822-q8vqPYSEC-2026-4173UBUNTU-CVE-2026-50221
Published 23-06-2026Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2026-50221 is a medium (CVSS 5.4) Server-Side Request Forgery (SSRF) vulnerability in openstack swift. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 23-06-2026
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

8 scores · 5 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

+0.07 pp

From 0.14% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • swift< 2.30.1-0+deb12u2 | < 2.35.1-0+deb13u3 | < 2.37.1-5
Openstack1 product
  • swift≥ 2.0.0, < 2.35.3 | ≥ 2.36.0, < 2.36.2 | ≥ 2.37.0, < 2.37.2
PyPI1 product
  • swift< 2.37.2
Ubuntu1 product
  • swiftAll versions (No fix recorded)

4 vendors · 4 products

References

13 links
Show all 13 references