CVE-2026-71192

MEDIUMPre-NVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.0Exploit: None knownExposed: 0

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

In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) from S3 API requests when s3_acl=true. An attacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a server-side copy from another tenant's private object. The source object authorization is bypassed because the S3API middleware has already authorized the request against the destination. The attacker can read any object whose project_id, container name, and object name are known, regardless of the source object's ACLs or ownership. This requires the non-default s3_acl=true configuration.

CVSS v3
6.0
EG Score
6.0(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity60% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

OSSA-2026-030: Swift S3API header authorization bypass — OpenStack Security Advisories 0.0.1.dev359 documentation

https://security.openstack.org/ossa/OSSA-2026-030.html
generic

oss-security - [OSSA-2026-030] OpenStack Swift: S3API header authorization bypass (CVE-2026-pending)

https://openwall.com/lists/oss-security/2026/07/28/26
generic

Bug #2158733 “[OSSA-2026-030] Swift S3API header authorization b...” : Bugs : OpenStack Object Storage (swift)

https://launchpad.net/bugs/2158733

Vendor Advisories for CVE-2026-71192(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 ... 2.37.1-6 (42 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
swift2.35.0-4 ... 2.37.1-6 (20 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
swift2.35.0-4 ... 2.37.1-5 (17 versions)2.37.1-6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 54× 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.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 15:09 UTCEG score recompute
  3. 2026-08-20 15:09 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 16:43 UTCGHSA enrichment
  6. 2026-08-18 18:16 UTCEG score recompute
  7. 2026-08-18 18:16 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-17 19:33 UTCEG score recompute
  11. 2026-08-17 19:33 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 19:47 UTCEG score recompute
  14. 2026-08-16 19:47 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-15 21:20 UTCEG score recompute
  19. 2026-08-15 21:20 UTCGHSA enrichment
  20. 2026-08-15 01:31 UTCEPSS rescore
  21. 2026-08-14 22:53 UTCGHSA enrichment
  22. 2026-08-14 00:27 UTCEG score recompute
  23. 2026-08-14 00:27 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 02:00 UTCEG score recompute
Show 29 more
  1. 2026-08-13 02:00 UTCGHSA enrichment
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-12 03:34 UTCEG score recompute
  4. 2026-08-12 03:34 UTCGHSA enrichment
  5. 2026-08-11 05:07 UTCEG score recompute
  6. 2026-08-11 05:07 UTCGHSA enrichment
  7. 2026-08-11 00:00 UTCEPSS rescore
  8. 2026-08-10 06:40 UTCEG score recompute
  9. 2026-08-10 06:40 UTCGHSA enrichment
  10. 2026-08-09 13:47 UTCEPSS rescore
  11. 2026-08-09 08:14 UTCEG score recompute
  12. 2026-08-09 08:14 UTCGHSA enrichment
  13. 2026-08-08 16:37 UTCEPSS rescore
  14. 2026-08-08 09:48 UTCEG score recompute
  15. 2026-08-08 09:48 UTCGHSA enrichment
  16. 2026-08-07 11:21 UTCEG score recompute
  17. 2026-08-07 11:21 UTCGHSA enrichment
  18. 2026-08-06 13:47 UTCEPSS rescore
  19. 2026-08-06 12:55 UTCEG score recompute
  20. 2026-08-06 12:54 UTCGHSA enrichment
  21. 2026-08-05 19:17 UTCEPSS rescore
  22. 2026-08-05 19:17 UTCEPSS rescore
  23. 2026-08-05 14:27 UTCEG score recompute
  24. 2026-08-05 14:27 UTCGHSA enrichment
  25. 2026-08-05 13:48 UTCEG score recompute
  26. 2026-08-05 13:48 UTCGHSA enrichment
  27. 2026-08-05 06:22 UTCEG score recompute
  28. 2026-08-05 05:34 UTCEG score recompute
  29. 2026-08-05 05:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71192?
CVE-2026-71192 is a medium vulnerability published on August 5, 2026. In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) from S3 API requests when s3_acl=true. An attacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a…
When was CVE-2026-71192 disclosed?
CVE-2026-71192 was first published in the National Vulnerability Database on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71192 actively exploited?
CVE-2026-71192 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 83.0% of all scored CVEs.
What is the CVSS score of CVE-2026-71192?
CVE-2026-71192 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-71192?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71192, 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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