CVE-2026-71966

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. 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 mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 3.3%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

CyberPanel 2.4.3, fixed in commit eca0c3c, contains an authenticated command injection vulnerability in the remote backup transfer feature that allows authenticated attackers to execute arbitrary OS commands by controlling a remote server's API response. Attackers can inject malicious commands through a crafted directory name in the remote server's API response, which bypasses security middleware validation and is passed unsanitized to the OS command execution function.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

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 (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
3.3%
EPSS %ILE
88th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 10, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 10, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

CyberPanel 2.4.3 Authenticated Command Injection via starRemoteTransfer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/cyberpanel-authenticated-command-injection-via-starremotetransfer
github_commit

commit eca0c3cbeb35 (usmannasir/cyberpanel)

Fix landed in usmannasir/cyberpanel commit eca0c3cbeb35 — awaiting tagged release

https://github.com/usmannasir/cyberpanel/commit/eca0c3cbeb35af8eaae9fafb094e8ef3cd923643
generic

Authenticated RCE and File Read Vulnerabilities Found in CyberPanel | McSam's blog

https://themcsam.github.io/posts/cyberpanel-2.4.3-vulnerabilties/

Vendor Advisories for CVE-2026-71966(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 17× in last 7d / 83× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 208 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 108 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 16:43 UTCEG score recompute
  2. 2026-10-11 14:03 UTCEG score recompute
  3. 2026-10-11 13:49 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  4. 2026-10-10 20:00 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  6. 2026-10-08 17:13 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  7. 2026-10-07 23:48 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  8. 2026-10-07 06:04 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  9. 2026-10-06 18:20 UTCEG score recompute
  10. 2026-10-06 18:20 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  12. 2026-10-05 19:28 UTCEG score recompute
  13. 2026-10-05 19:28 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  15. 2026-10-05 07:45 UTCEG score recompute
  16. 2026-10-05 07:45 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  18. 2026-10-04 16:40 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-04 04:18 UTCEG score recompute
  20. 2026-10-04 04:18 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  22. 2026-10-02 22:34 UTCEG score recompute
  23. 2026-10-02 22:34 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  24. 2026-10-02 09:18 UTCEG score recompute
  25. 2026-10-02 09:18 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
Show 75 more
  1. 2026-10-01 19:50 UTCEPSS rescoreEPSS 3.3% · 88th percentile
  2. 2026-10-01 10:05 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  3. 2026-09-30 22:25 UTCEG score recompute
  4. 2026-09-30 22:25 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  5. 2026-09-30 15:03 UTCEPSS rescoreEPSS 3.3% · 87th percentile
  6. 2026-09-29 05:21 UTCEG score recompute
  7. 2026-09-29 05:21 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-09-28 13:52 UTCEPSS rescoreEPSS 3.3% · 87th percentile
  9. 2026-09-28 02:23 UTCEG score recompute
  10. 2026-09-28 02:23 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-09-27 13:48 UTCEPSS rescoreEPSS 3.3% · 87th percentile
  12. 2026-09-27 12:35 UTCEG score recompute
  13. 2026-09-27 12:35 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-09-26 15:59 UTCEPSS rescoreEPSS 3.3% · 87th percentile
  15. 2026-09-25 04:00 UTCEG score recompute
  16. 2026-09-25 04:00 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-09-24 09:36 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  18. 2026-09-23 21:56 UTCEG score recompute
  19. 2026-09-23 21:56 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  20. 2026-09-23 17:54 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  21. 2026-09-23 10:16 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  22. 2026-09-22 22:36 UTCEG score recompute
  23. 2026-09-22 22:36 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  24. 2026-09-22 10:55 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-09-21 22:54 UTCEG score recompute
  26. 2026-09-21 22:54 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-09-21 21:09 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  28. 2026-09-21 11:07 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  29. 2026-09-20 20:02 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  30. 2026-09-20 02:26 UTCEG score recompute
  31. 2026-09-20 02:26 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  32. 2026-09-19 14:45 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  33. 2026-09-19 02:39 UTCEG score recompute
  34. 2026-09-19 02:39 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  35. 2026-09-18 19:28 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  36. 2026-09-18 14:38 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  37. 2026-09-18 02:33 UTCEG score recompute
  38. 2026-09-18 02:33 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  39. 2026-09-17 14:53 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  40. 2026-09-17 00:42 UTCEG score recompute
  41. 2026-09-17 00:42 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  42. 2026-09-16 14:08 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  43. 2026-09-16 05:15 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  44. 2026-09-16 02:28 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-09-15 13:44 UTCEG score recompute
  46. 2026-09-15 13:44 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  47. 2026-09-15 03:12 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  48. 2026-09-15 00:27 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  49. 2026-09-14 12:10 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  50. 2026-09-14 00:30 UTCEG score recompute
  51. 2026-09-14 00:30 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  52. 2026-09-13 12:50 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  53. 2026-09-13 01:10 UTCEG score recompute
  54. 2026-09-13 01:10 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  55. 2026-09-12 15:02 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  56. 2026-09-12 13:30 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-09-12 01:50 UTCEG score recompute
  58. 2026-09-12 01:50 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  59. 2026-09-11 14:53 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  60. 2026-09-11 14:10 UTCEG score recompute
  61. 2026-09-11 14:10 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  62. 2026-09-11 01:28 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  63. 2026-09-10 13:48 UTCEG score recompute
  64. 2026-09-10 13:48 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  65. 2026-09-10 09:35 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  66. 2026-09-10 01:59 UTCEG score recompute
  67. 2026-09-10 01:59 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  68. 2026-09-09 08:41 UTCEG score recompute
  69. 2026-09-09 08:41 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-09-08 22:01 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  71. 2026-09-08 21:00 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  72. 2026-09-08 04:54 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-09-07 17:14 UTCEG score recompute
  74. 2026-09-07 17:14 UTCGHSA enrichmentGHSA-hmw4-vv3v-9326 · GitHub severity HIGH · GitHub CVSS 8.8
  75. 2026-09-06 14:55 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71966?
CVE-2026-71966 is a high-severity vulnerability; its CVE record was published on August 10, 2026. CyberPanel 2.4.3, fixed in commit eca0c3c, contains an authenticated command injection vulnerability in the remote backup transfer feature that allows authenticated attackers to execute arbitrary OS commands by controlling a remote server's API response. Attackers can inject malicious commands…
When was CVE-2026-71966 made public?
CVE-2026-71966 was made public on December 18, 2025: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 10, 2026. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-71966 actively exploited?
CVE-2026-71966 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.3% probability of exploitation in the next 30 days (88th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71966?
CVE-2026-71966 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71966?
An upstream fix for CVE-2026-71966 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-71966 are linked in the Vendor Advisories panel on this page.

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