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: 1%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
1%
EPSS %ILE
64%
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 25× in last 7d / 99× 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 101 total refreshes for this CVE.

  1. 2026-07-30 01:30 UTCEPSS rescore
  2. 2026-07-30 01:30 UTCEPSS rescore
  3. 2026-07-29 23:29 UTCEG score recompute
  4. 2026-07-29 23:29 UTCGHSA enrichment
  5. 2026-07-29 12:28 UTCGHSA enrichment
  6. 2026-07-29 01:29 UTCEG score recompute
  7. 2026-07-29 01:29 UTCGHSA enrichment
  8. 2026-07-28 15:37 UTCEPSS rescore
  9. 2026-07-28 14:28 UTCGHSA enrichment
  10. 2026-07-28 01:01 UTCEG score recompute
  11. 2026-07-28 01:01 UTCGHSA enrichment
  12. 2026-07-27 14:14 UTCEPSS rescore
  13. 2026-07-27 12:02 UTCGHSA enrichment
  14. 2026-07-27 01:04 UTCEG score recompute
  15. 2026-07-27 01:03 UTCGHSA enrichment
  16. 2026-07-26 14:54 UTCEPSS rescore
  17. 2026-07-26 14:54 UTCEPSS rescore
  18. 2026-07-26 14:02 UTCEG score recompute
  19. 2026-07-26 14:01 UTCGHSA enrichment
  20. 2026-07-25 14:18 UTCEPSS rescore
  21. 2026-07-25 14:18 UTCEPSS rescore
  22. 2026-07-24 14:18 UTCEPSS rescore
  23. 2026-07-24 14:18 UTCEPSS rescore
  24. 2026-07-23 14:18 UTCEPSS rescore
  25. 2026-07-23 14:18 UTCEPSS rescore
Show 75 more
  1. 2026-07-23 03:20 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 15:25 UTCEPSS rescore
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-17 04:47 UTCGHSA enrichment
  11. 2026-07-16 17:48 UTCGHSA enrichment
  12. 2026-07-16 17:03 UTCEPSS rescore
  13. 2026-07-16 06:49 UTCGHSA enrichment
  14. 2026-07-15 19:47 UTCGHSA enrichment
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 16:57 UTCEPSS rescore
  17. 2026-07-15 08:48 UTCGHSA enrichment
  18. 2026-07-15 02:00 UTCEPSS rescore
  19. 2026-07-15 02:00 UTCEPSS rescore
  20. 2026-07-14 21:48 UTCGHSA enrichment
  21. 2026-07-14 10:49 UTCGHSA enrichment
  22. 2026-07-13 23:50 UTCGHSA enrichment
  23. 2026-07-13 22:31 UTCEPSS rescore
  24. 2026-07-13 12:51 UTCGHSA enrichment
  25. 2026-07-13 06:13 UTCEPSS rescore
  26. 2026-07-13 06:13 UTCEPSS rescore
  27. 2026-07-13 01:51 UTCGHSA enrichment
  28. 2026-07-12 14:52 UTCGHSA enrichment
  29. 2026-07-12 05:46 UTCEPSS rescore
  30. 2026-07-12 03:52 UTCGHSA enrichment
  31. 2026-07-11 16:53 UTCGHSA enrichment
  32. 2026-07-11 08:27 UTCEPSS rescore
  33. 2026-07-11 08:27 UTCEPSS rescore
  34. 2026-07-11 05:54 UTCGHSA enrichment
  35. 2026-07-10 18:55 UTCGHSA enrichment
  36. 2026-07-10 07:56 UTCGHSA enrichment
  37. 2026-07-09 20:58 UTCGHSA enrichment
  38. 2026-07-09 19:10 UTCEPSS rescore
  39. 2026-07-09 19:10 UTCEPSS rescore
  40. 2026-07-09 09:58 UTCGHSA enrichment
  41. 2026-07-08 22:59 UTCGHSA enrichment
  42. 2026-07-08 15:16 UTCEPSS rescore
  43. 2026-07-08 15:16 UTCEPSS rescore
  44. 2026-07-08 11:57 UTCGHSA enrichment
  45. 2026-07-08 00:46 UTCGHSA enrichment
  46. 2026-07-07 13:47 UTCGHSA enrichment
  47. 2026-07-07 13:46 UTCEPSS rescore
  48. 2026-07-07 13:46 UTCEPSS rescore
  49. 2026-07-07 02:48 UTCGHSA enrichment
  50. 2026-07-06 16:27 UTCEPSS rescore
  51. 2026-07-06 16:27 UTCEPSS rescore
  52. 2026-07-06 15:48 UTCGHSA enrichment
  53. 2026-07-06 04:48 UTCGHSA enrichment
  54. 2026-07-06 02:23 UTCEPSS rescore
  55. 2026-07-06 02:23 UTCEPSS rescore
  56. 2026-07-05 17:44 UTCGHSA enrichment
  57. 2026-07-05 06:45 UTCGHSA enrichment
  58. 2026-07-05 02:31 UTCEPSS rescore
  59. 2026-07-05 02:30 UTCEPSS rescore
  60. 2026-07-04 19:46 UTCGHSA enrichment
  61. 2026-07-04 08:47 UTCGHSA enrichment
  62. 2026-07-04 06:31 UTCEPSS rescore
  63. 2026-07-04 06:31 UTCEPSS rescore
  64. 2026-07-03 21:48 UTCGHSA enrichment
  65. 2026-07-03 10:49 UTCGHSA enrichment
  66. 2026-07-02 23:48 UTCGHSA enrichment
  67. 2026-07-02 12:49 UTCGHSA enrichment
  68. 2026-07-02 01:50 UTCGHSA enrichment
  69. 2026-07-01 15:07 UTCEPSS rescore
  70. 2026-07-01 14:51 UTCGHSA enrichment
  71. 2026-07-01 03:52 UTCGHSA enrichment
  72. 2026-06-30 23:22 UTCEPSS rescore
  73. 2026-06-30 16:52 UTCGHSA enrichment
  74. 2026-06-30 05:53 UTCGHSA enrichment
  75. 2026-06-29 18:54 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 1% probability of exploitation in the next 30 days, which ranks it in the top 35.5% 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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