CVE-2026-71310

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (47th percentile of EPSS-scored CVEs). 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
Elevated
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over an unrestricted buffered reader, allowing a malicious or compromised configured proxy, or an active on-path actor controlling a plaintext HTTP proxy hop, to send oversized headers that grow memory until the rclone process fails. The affected helper is used by FTP and SFTP proxy connections, and SFTP reaches the parser before SSH server authentication, so target host key validation does not constrain a malicious proxy. This issue is fixed in 1.75.0.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100CISA SSVC

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
Severity59% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
Patch available. Sources: github_commit, github_release, github.
github_release Patch Available

rclone v1.75.0

Patch available: rclone/rclone v1.75.0

https://github.com/rclone/rclone/releases/tag/v1.75.0
github_commit

commit 21d8cd3b92cd (rclone/rclone)

Fix landed in rclone/rclone commit 21d8cd3b92cd — awaiting tagged release

https://github.com/rclone/rclone/commit/21d8cd3b92cd81d987f485051d454ea675d91a2b
github Patch Available

Unbounded HTTP CONNECT Response Headers Can Exhaust rclone Memory · Advisory · rclone/rclone · GitHub

https://github.com/rclone/rclone/security/advisories/GHSA-xhf4-832v-7xcr

Vendor Advisories for CVE-2026-71310(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 rangeFix by version rangeDependents
rclone1.53.3-1 ... 1.69.3+dfsg-3 (13 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rclone1.60.1+dfsg-2 ... 1.69.3+dfsg-3 (8 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rclone1.60.1+dfsg-4 ... 1.69.3+dfsg-3 (6 versions)
  • every version on: no fix on record
—
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/rclone/rclone—
  • every version up to 1.75.0: fixed in 1.75.0
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 40× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 05:57 UTCEG score recompute
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-02 17:56 UTCEPSS rescore
  5. 2026-10-02 09:50 UTCEG score recompute
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-10-01 02:14 UTCEG score recompute
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-29 06:12 UTCEG score recompute
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-27 17:38 UTCEG score recompute
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-25 04:29 UTCEG score recompute
  15. 2026-09-23 21:59 UTCEG score recompute
  16. 2026-09-23 17:54 UTCEPSS rescore
  17. 2026-09-22 23:58 UTCEG score recompute
  18. 2026-09-22 01:23 UTCEG score recompute
  19. 2026-09-21 21:09 UTCEPSS rescore
  20. 2026-09-19 21:45 UTCEG score recompute
  21. 2026-09-18 23:10 UTCEG score recompute
  22. 2026-09-18 19:28 UTCEPSS rescore
  23. 2026-09-18 01:04 UTCEG score recompute
  24. 2026-09-17 01:04 UTCEG score recompute
  25. 2026-09-16 14:08 UTCEPSS rescore
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  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-15 16:09 UTCEG score recompute
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-14 11:51 UTCEG score recompute
  5. 2026-09-12 15:47 UTCEG score recompute
  6. 2026-09-12 15:02 UTCEPSS rescore
  7. 2026-09-11 17:45 UTCEG score recompute
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-10 19:06 UTCEG score recompute
  10. 2026-09-10 09:35 UTCEPSS rescore
  11. 2026-09-09 06:18 UTCEG score recompute
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-07 18:11 UTCEG score recompute
  14. 2026-09-06 13:48 UTCEPSS rescore
  15. 2026-09-06 05:31 UTCEG score recompute
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  17. 2026-09-04 09:26 UTCEG score recompute
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-03 06:38 UTCEG score recompute
  20. 2026-09-02 14:12 UTCEPSS rescore
  21. 2026-09-01 18:59 UTCEG score recompute
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 15:39 UTCEG score recompute
  25. 2026-08-31 15:01 UTCEG score recompute
  26. 2026-08-30 19:19 UTCEG score recompute
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 01:22 UTCEPSS rescore
  29. 2026-08-29 21:17 UTCEG score recompute
  30. 2026-08-28 21:42 UTCEPSS rescore
  31. 2026-08-27 19:54 UTCEG score recompute
  32. 2026-08-26 19:11 UTCEG score recompute
  33. 2026-08-26 14:47 UTCEPSS rescore
  34. 2026-08-25 21:09 UTCEG score recompute
  35. 2026-08-25 13:49 UTCEPSS rescore
  36. 2026-08-24 23:07 UTCEG score recompute
  37. 2026-08-23 03:04 UTCEG score recompute
  38. 2026-08-23 00:19 UTCEPSS rescore
  39. 2026-08-22 05:00 UTCEG score recompute
  40. 2026-08-21 23:49 UTCEPSS rescore
  41. 2026-08-21 06:58 UTCEG score recompute
  42. 2026-08-20 22:56 UTCEPSS rescore
  43. 2026-08-20 08:56 UTCEG score recompute
  44. 2026-08-19 17:04 UTCEPSS rescore
  45. 2026-08-19 10:54 UTCEG score recompute
  46. 2026-08-18 13:49 UTCEPSS rescore
  47. 2026-08-18 13:49 UTCEPSS rescore
  48. 2026-08-17 14:49 UTCEG score recompute
  49. 2026-08-17 13:47 UTCEPSS rescore
  50. 2026-08-16 16:47 UTCEG score recompute
  51. 2026-08-16 14:56 UTCEPSS rescore
  52. 2026-08-16 14:56 UTCEPSS rescore
  53. 2026-08-16 02:15 UTCEPSS rescore
  54. 2026-08-15 18:46 UTCEG score recompute
  55. 2026-08-15 01:31 UTCEPSS rescore
  56. 2026-08-13 22:42 UTCEG score recompute
  57. 2026-08-13 22:00 UTCEPSS rescore
  58. 2026-08-13 00:40 UTCEG score recompute
  59. 2026-08-12 13:51 UTCEPSS rescore
  60. 2026-08-12 02:38 UTCEG score recompute
  61. 2026-08-11 04:36 UTCEG score recompute
  62. 2026-08-11 00:00 UTCEPSS rescore
  63. 2026-08-10 06:34 UTCEG score recompute
  64. 2026-08-09 13:47 UTCEPSS rescore
  65. 2026-08-09 08:33 UTCEG score recompute
  66. 2026-08-08 16:37 UTCEPSS rescore
  67. 2026-08-08 10:31 UTCEG score recompute
  68. 2026-08-06 14:28 UTCEG score recompute
  69. 2026-08-06 13:53 UTCEG score recompute
  70. 2026-08-06 13:47 UTCEPSS rescore
  71. 2026-08-05 21:17 UTCEG score recompute
  72. 2026-08-05 20:45 UTCEG score recompute
  73. 2026-08-05 20:45 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-71310?
CVE-2026-71310 is a medium vulnerability published on August 5, 2026. rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over an unrestricted buffered reader, allowing a malicious or…
When was CVE-2026-71310 disclosed?
CVE-2026-71310 was first published 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-2026-71310 actively exploited?
CVE-2026-71310 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71310?
CVE-2026-71310 has a CVSS base score of 5.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71310?
A fix for CVE-2026-71310 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71310 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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