CVE-2026-50221

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-06-23. NVD baseline CVSS 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.4
EG Score
5.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 29, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

oss-security - [OSSA-2026-024] OpenStack Swift: Swift proxy-server SSRF via header injection (CVE-2026-50221)

http://www.openwall.com/lists/oss-security/2026/06/23/5
generic

oss-security - [OSSA-2026-024] OpenStack Swift: Swift proxy-server SSRF via header injection (CVE-2026-50221)

https://www.openwall.com/lists/oss-security/2026/06/23/5
generic

OSSA-2026-024: Swift proxy-server SSRF via header injection — OpenStack Security Advisories 0.0.1.dev348 documentation

https://security.openstack.org/ossa/OSSA-2026-024.html
generic

Bug #2150261 “[OSSA-2026-024] Swift proxy-server SSRF via header...” : Bugs : OpenStack Object Storage (swift)

https://launchpad.net/bugs/2150261

Vendor Advisories for CVE-2026-50221(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
swift2.26.0-10 ... 2.37.1-6 (55 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
swift2.30.0-4, 2.30.1-0+deb12u12.30.1-0+deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
swift2.35.0-4, 2.35.1-0+deb13u1, 2.35.1-0+deb13u22.35.1-0+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
swift2.35.0-4 ... 2.37.1-4 (16 versions)2.37.1-5—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 167 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 10:23 UTCEG score recompute
  4. 2026-09-18 10:23 UTCGHSA enrichment
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-13 16:47 UTCEPSS rescore
  8. 2026-09-13 12:21 UTCEG score recompute
  9. 2026-09-13 12:21 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-10 09:35 UTCEPSS rescore
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-07 16:01 UTCEPSS rescore
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-08-30 20:25 UTCEG score recompute
  20. 2026-08-30 20:25 UTCGHSA enrichment
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-28 21:41 UTCEPSS rescore
  24. 2026-08-27 14:25 UTCEPSS rescore
  25. 2026-08-26 14:46 UTCEPSS rescore
Show 75 more
  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 22:05 UTCEG score recompute
  3. 2026-08-24 22:05 UTCGHSA enrichment
  4. 2026-08-23 15:00 UTCEG score recompute
  5. 2026-08-23 15:00 UTCGHSA enrichment
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-22 13:46 UTCEG score recompute
  8. 2026-08-22 13:46 UTCGHSA enrichment
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 09:19 UTCEG score recompute
  11. 2026-08-21 09:19 UTCGHSA enrichment
  12. 2026-08-20 22:55 UTCEPSS rescore
  13. 2026-08-20 07:45 UTCEG score recompute
  14. 2026-08-20 07:45 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 04:48 UTCEG score recompute
  17. 2026-08-19 04:48 UTCGHSA enrichment
  18. 2026-08-18 13:48 UTCEPSS rescore
  19. 2026-08-17 13:47 UTCEPSS rescore
  20. 2026-08-17 07:03 UTCEG score recompute
  21. 2026-08-17 07:03 UTCGHSA enrichment
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 05:48 UTCEG score recompute
  24. 2026-08-16 05:48 UTCGHSA enrichment
  25. 2026-08-16 02:14 UTCEPSS rescore
  26. 2026-08-15 04:34 UTCEG score recompute
  27. 2026-08-15 04:34 UTCGHSA enrichment
  28. 2026-08-15 01:30 UTCEPSS rescore
  29. 2026-08-14 03:19 UTCEG score recompute
  30. 2026-08-14 03:19 UTCGHSA enrichment
  31. 2026-08-13 22:00 UTCEPSS rescore
  32. 2026-08-13 02:05 UTCEG score recompute
  33. 2026-08-13 02:05 UTCGHSA enrichment
  34. 2026-08-12 13:51 UTCEPSS rescore
  35. 2026-08-12 00:51 UTCEG score recompute
  36. 2026-08-12 00:51 UTCGHSA enrichment
  37. 2026-08-11 00:00 UTCEPSS rescore
  38. 2026-08-10 23:37 UTCGHSA enrichment
  39. 2026-08-09 22:23 UTCEG score recompute
  40. 2026-08-09 22:23 UTCGHSA enrichment
  41. 2026-08-09 13:46 UTCEPSS rescore
  42. 2026-08-08 21:09 UTCEG score recompute
  43. 2026-08-08 21:09 UTCGHSA enrichment
  44. 2026-08-08 16:37 UTCEPSS rescore
  45. 2026-08-07 19:54 UTCGHSA enrichment
  46. 2026-08-06 18:40 UTCEG score recompute
  47. 2026-08-06 18:40 UTCGHSA enrichment
  48. 2026-08-06 13:47 UTCEPSS rescore
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-05 17:26 UTCGHSA enrichment
  51. 2026-08-04 15:14 UTCEG score recompute
  52. 2026-08-04 15:14 UTCGHSA enrichment
  53. 2026-08-04 10:39 UTCEPSS rescore
  54. 2026-08-03 10:36 UTCEPSS rescore
  55. 2026-08-03 07:58 UTCGHSA enrichment
  56. 2026-08-02 06:27 UTCEG score recompute
  57. 2026-08-02 06:27 UTCGHSA enrichment
  58. 2026-08-02 02:27 UTCEPSS rescore
  59. 2026-08-01 05:03 UTCEG score recompute
  60. 2026-08-01 05:03 UTCGHSA enrichment
  61. 2026-08-01 04:16 UTCEPSS rescore
  62. 2026-07-31 03:48 UTCEG score recompute
  63. 2026-07-31 03:48 UTCGHSA enrichment
  64. 2026-07-30 16:28 UTCEPSS rescore
  65. 2026-07-30 02:34 UTCEG score recompute
  66. 2026-07-30 02:34 UTCGHSA enrichment
  67. 2026-07-30 01:30 UTCEPSS rescore
  68. 2026-07-29 01:15 UTCEG score recompute
  69. 2026-07-29 01:15 UTCGHSA enrichment
  70. 2026-07-28 15:37 UTCEPSS rescore
  71. 2026-07-27 17:46 UTCEG score recompute
  72. 2026-07-27 17:46 UTCGHSA enrichment
  73. 2026-07-26 15:52 UTCEG score recompute
  74. 2026-07-26 15:52 UTCGHSA enrichment
  75. 2026-07-26 14:54 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-50221?
CVE-2026-50221 is a medium vulnerability published on June 23, 2026. 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…
When was CVE-2026-50221 disclosed?
CVE-2026-50221 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50221 actively exploited?
CVE-2026-50221 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.9% of all scored CVEs.
What is the CVSS score of CVE-2026-50221?
CVE-2026-50221 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-50221?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50221, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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