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 56% 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: 1%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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

August 5, 2026

Last Modified

September 9, 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, 2.30.1-0+deb12u12.30.1-0+deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
swift2.35.0-4 ... 2.37.1-6 (21 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 20× in last 7d / 96× 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 164 total refreshes for this CVE.

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

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 September 9, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 55.8% 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

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