CVE-2026-71190

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 61% 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
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: 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 proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The "qdtext" pattern (?:[^"]|\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in the proxy worker. A payload of 32 backslash-character pairs exceeds 30 seconds of CPU time. No authentication is required. Repeated requests can exhaust all proxy worker threads, resulting in a complete denial of service.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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
Severity87% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 6, 2026

Advisory Details (3)

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

OSSA-2026-031: Swift proxy denial of service via Accept header — OpenStack Security Advisories 0.0.1.dev359 documentation

https://security.openstack.org/ossa/OSSA-2026-031.html
generic

oss-security - [OSSA-2026-031] OpenStack Swift: Proxy denial of service via Accept header (CVE-2026-pending)

https://openwall.com/lists/oss-security/2026/07/28/27
generic

Bug #2158771 “[OSSA-2026-031] Unauthenticated remote DOS via mal...” : Bugs : OpenStack Object Storage (swift)

https://launchpad.net/bugs/2158771

Vendor Advisories for CVE-2026-71190(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 30× in last 7d / 69× 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 20:30 UTCGHSA enrichment
  3. 2026-08-20 08:21 UTCGHSA enrichment
  4. 2026-08-19 20:12 UTCEG score recompute
  5. 2026-08-19 20:12 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 08:03 UTCGHSA enrichment
  8. 2026-08-18 19:54 UTCEG score recompute
  9. 2026-08-18 19:54 UTCGHSA enrichment
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 07:45 UTCGHSA enrichment
  13. 2026-08-17 19:33 UTCEG score recompute
  14. 2026-08-17 19:33 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 06:05 UTCGHSA enrichment
  17. 2026-08-16 17:57 UTCEG score recompute
  18. 2026-08-16 17:57 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 05:48 UTCEG score recompute
  22. 2026-08-16 05:48 UTCGHSA enrichment
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 17:40 UTCGHSA enrichment
  25. 2026-08-15 05:31 UTCEG score recompute
Show 44 more
  1. 2026-08-15 05:31 UTCGHSA enrichment
  2. 2026-08-15 01:31 UTCEPSS rescore
  3. 2026-08-14 17:22 UTCGHSA enrichment
  4. 2026-08-14 05:03 UTCEG score recompute
  5. 2026-08-14 05:03 UTCGHSA enrichment
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-13 16:54 UTCGHSA enrichment
  8. 2026-08-13 04:45 UTCGHSA enrichment
  9. 2026-08-12 16:37 UTCEG score recompute
  10. 2026-08-12 16:37 UTCGHSA enrichment
  11. 2026-08-12 13:51 UTCEPSS rescore
  12. 2026-08-12 04:28 UTCGHSA enrichment
  13. 2026-08-11 16:11 UTCEG score recompute
  14. 2026-08-11 16:11 UTCGHSA enrichment
  15. 2026-08-11 04:03 UTCEG score recompute
  16. 2026-08-11 04:03 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 15:54 UTCGHSA enrichment
  19. 2026-08-10 03:27 UTCGHSA enrichment
  20. 2026-08-09 15:18 UTCEG score recompute
  21. 2026-08-09 15:18 UTCGHSA enrichment
  22. 2026-08-09 13:47 UTCEPSS rescore
  23. 2026-08-09 03:10 UTCEG score recompute
  24. 2026-08-09 03:10 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 15:02 UTCGHSA enrichment
  27. 2026-08-08 02:53 UTCEG score recompute
  28. 2026-08-08 02:53 UTCGHSA enrichment
  29. 2026-08-07 14:44 UTCGHSA enrichment
  30. 2026-08-07 02:36 UTCGHSA enrichment
  31. 2026-08-06 14:28 UTCEG score recompute
  32. 2026-08-06 14:28 UTCGHSA enrichment
  33. 2026-08-06 13:54 UTCEG score recompute
  34. 2026-08-06 13:54 UTCGHSA enrichment
  35. 2026-08-06 13:47 UTCEPSS rescore
  36. 2026-08-06 07:40 UTCGHSA enrichment
  37. 2026-08-05 19:31 UTCEG score recompute
  38. 2026-08-05 19:31 UTCGHSA enrichment
  39. 2026-08-05 19:17 UTCEPSS rescore
  40. 2026-08-05 19:17 UTCEPSS rescore
  41. 2026-08-05 18:32 UTCGHSA enrichment
  42. 2026-08-05 06:22 UTCEG score recompute
  43. 2026-08-05 05:34 UTCEG score recompute
  44. 2026-08-05 05:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71190?
CVE-2026-71190 is a high vulnerability published on August 5, 2026. In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The "qdtext" pattern (?:[^"]|\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU…
When was CVE-2026-71190 disclosed?
CVE-2026-71190 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71190 actively exploited?
CVE-2026-71190 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 61.4% of all scored CVEs.
What is the CVSS score of CVE-2026-71190?
CVE-2026-71190 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-71190?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71190, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-71190

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