CVE-2026-70615

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH confidence

Score 9.9 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: Elevated riskExposed: 0

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

boringproxy through 0.10.0 contains a newline injection vulnerability that allows authenticated low-privileged users with tunnel-creation permission to inject arbitrary lines into the server account's SSH authorized_keys file by supplying a percent-encoded newline character in the domain parameter of the tunnel creation endpoint. Attackers can insert an unrestricted public key entry into authorized_keys to gain persistent shell access, and subsequently read cleartext credentials from the database file including all user tokens, tunnel private keys, and TLS certificates.

CVSS v3
9.9
EG Score
9.9(high)
EG Risk
61(Track)
EG Risk 61/100SSVC: 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
Severity99% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 6, 2026

Advisory Details (2)

Auto-updated Aug 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

boringproxy 0.10.0 SSH authorized_keys Injection via Tunnel Creation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/boringproxy-ssh-authorized-keys-injection-via-tunnel-creation
generic🟡 PoC Available

Remote-Code-Execution-And-Privilege-Escalation-Through-SSH-Authorized-Keys-Injection-boringproxy-/README.md at master · theopaid/Remote-Code-Execution-And-Privilege-Escalation-Through-SSH-Authorized-Keys-Injection-boringproxy- · GitHub

https://github.com/theopaid/Remote-Code-Execution-And-Privilege-Escalation-Through-SSH-Authorized-Keys-Injection-boringproxy-/blob/master/README.md

Vendor Advisories for CVE-2026-70615(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 58× in last 7d / 129× 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 129 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-70615?
CVE-2026-70615 is a critical vulnerability published on August 5, 2026. boringproxy through 0.10.0 contains a newline injection vulnerability that allows authenticated low-privileged users with tunnel-creation permission to inject arbitrary lines into the server account's SSH authorizedkeys file by supplying a percent-encoded newline character in the domain parameter…
When was CVE-2026-70615 disclosed?
CVE-2026-70615 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-2026-70615 actively exploited?
CVE-2026-70615 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 87.8% of all scored CVEs.
What is the CVSS score of CVE-2026-70615?
CVE-2026-70615 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-70615?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70615, 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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