CVE-2026-57999

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH 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 week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 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(high)
EPSS
63.9%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 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 42× in last 7d / 44× 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. 2026-07-07 02:48 UTCEG score recompute
  2. 2026-07-07 02:48 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 15:48 UTCEG score recompute
  6. 2026-07-06 15:48 UTCGHSA enrichment
  7. 2026-07-06 04:48 UTCEG score recompute
  8. 2026-07-06 04:48 UTCGHSA enrichment
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-06 02:23 UTCEPSS rescore
  11. 2026-07-05 17:44 UTCEG score recompute
  12. 2026-07-05 17:44 UTCGHSA enrichment
  13. 2026-07-05 06:45 UTCEG score recompute
  14. 2026-07-05 06:45 UTCGHSA enrichment
  15. 2026-07-05 02:31 UTCEPSS rescore
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 19:46 UTCEG score recompute
  18. 2026-07-04 19:46 UTCGHSA enrichment
  19. 2026-07-04 08:48 UTCEG score recompute
  20. 2026-07-04 08:47 UTCGHSA enrichment
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-04 06:31 UTCEPSS rescore
  23. 2026-07-03 21:48 UTCEG score recompute
  24. 2026-07-03 21:48 UTCGHSA enrichment
  25. 2026-07-03 10:49 UTCEG score recompute
Show 19 more
  1. 2026-07-03 10:49 UTCGHSA enrichment
  2. 2026-07-02 23:48 UTCEG score recompute
  3. 2026-07-02 23:48 UTCGHSA enrichment
  4. 2026-07-02 12:49 UTCEG score recompute
  5. 2026-07-02 12:49 UTCGHSA enrichment
  6. 2026-07-02 01:50 UTCEG score recompute
  7. 2026-07-02 01:50 UTCGHSA enrichment
  8. 2026-07-01 15:07 UTCEPSS rescore
  9. 2026-07-01 14:51 UTCEG score recompute
  10. 2026-07-01 14:51 UTCGHSA enrichment
  11. 2026-07-01 03:52 UTCEG score recompute
  12. 2026-07-01 03:52 UTCGHSA enrichment
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-30 16:53 UTCEG score recompute
  15. 2026-06-30 16:52 UTCGHSA enrichment
  16. 2026-06-30 05:53 UTCEG score recompute
  17. 2026-06-30 05:53 UTCGHSA enrichment
  18. 2026-06-29 18:54 UTCEG score recompute
  19. 2026-06-29 18:53 UTCMITRE cvelistV5first tracked

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 June 30, 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 63.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-57999

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