CVE-2026-57999

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-29. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

luci-app-tailscale-community contains a command injection vulnerability in the tailscale.do_login RPC method that allows authenticated users to execute arbitrary commands as root. The vulnerability exists because user-controlled loginserver and loginserver_authkey parameters are improperly quoted within a double-quoted shell command, allowing shell substitutions like $() to be evaluated by the outer shell before argument processing.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

June 29, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jun 29, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

luci-app-tailscale-community - Command Injection via tailscale.do_login RPC | Advisories | VulnCheck

https://www.vulncheck.com/advisories/luci-app-tailscale-community-command-injection-via-tailscale-do-login-rpc
github Patch Available🟡 PoC Available

`luci-app-tailscale-community` allows delegated LuCI users to execute commands as root through `tailscale.do_login` · Advisory · openwrt/luci · GitHub

https://github.com/openwrt/luci/security/advisories/GHSA-xwc5-mx58-rh35

Vendor Advisories for CVE-2026-57999(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 7× in last 7d / 67× 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 223 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57999?
CVE-2026-57999 is a high vulnerability published on June 29, 2026. luci-app-tailscale-community contains a command injection vulnerability in the tailscale.dologin RPC method that allows authenticated users to execute arbitrary commands as root. The vulnerability exists because user-controlled loginserver and loginserverauthkey parameters are improperly quoted…
When was CVE-2026-57999 disclosed?
CVE-2026-57999 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57999 actively exploited?
CVE-2026-57999 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 17.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57999?
CVE-2026-57999 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-57999?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57999, 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.

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