CVE-2026-48105

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: None knownExposed: 0

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

Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's Raft FSM (internal/cluster/raft/fsm.go:applyRegisterFile) accepts attacker-chosen file paths in manifest-registration proposals without validating them against the configured storage backend. The only check is that the path is non-empty. There is no parent-traversal (..) rejection, no allowlist of legitimate prefixes, no scheme restriction (s3:// vs local), and no length bound. This is fixed in 2026.06.1. Some workarounds are available. Restrict cluster network access to known-trusted peers via strict firewall rules, audit the cluster manifest for unexpected paths (any path not matching the configured storage backend root is suspect), and/or disable cluster mode until the fix is available.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity83% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

August 21, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Aug 21, 2026
Patch available. Sources: github.
github Patch Available

Arc Enterprise cluster FSM applyRegisterFile accepts arbitrary file paths without validation, enabling cluster-wide path-traversal worm primitive · Advisory · Basekick-Labs/arc · GitHub

https://github.com/Basekick-Labs/arc/security/advisories/GHSA-f85q-mvg8-qf37

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 51× 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. 2026-09-18 22:30 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 21:16 UTCEG score recompute
  4. 2026-09-16 19:41 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:43 UTCEG score recompute
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 04:27 UTCEG score recompute
  9. 2026-09-14 03:12 UTCEG score recompute
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-13 01:58 UTCEG score recompute
  12. 2026-09-12 00:44 UTCEG score recompute
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 12:05 UTCEG score recompute
  15. 2026-09-10 09:55 UTCEG score recompute
  16. 2026-09-10 09:35 UTCEPSS rescore
  17. 2026-09-09 01:44 UTCEG score recompute
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-08 04:05 UTCEG score recompute
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-06 13:48 UTCEG score recompute
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-06 01:11 UTCEG score recompute
  24. 2026-09-04 23:48 UTCEG score recompute
  25. 2026-09-04 11:06 UTCEG score recompute
Show 26 more
  1. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-02 21:12 UTCEG score recompute
  3. 2026-09-02 14:12 UTCEPSS rescore
  4. 2026-09-01 19:53 UTCEG score recompute
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-09-01 06:35 UTCEG score recompute
  7. 2026-08-31 03:36 UTCEG score recompute
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 02:21 UTCEG score recompute
  10. 2026-08-30 01:22 UTCEPSS rescore
  11. 2026-08-29 01:02 UTCEG score recompute
  12. 2026-08-28 21:41 UTCEPSS rescore
  13. 2026-08-27 23:18 UTCEG score recompute
  14. 2026-08-27 14:25 UTCEPSS rescore
  15. 2026-08-26 22:04 UTCEG score recompute
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-25 20:43 UTCEG score recompute
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-24 19:26 UTCEG score recompute
  20. 2026-08-24 18:51 UTCEG score recompute
  21. 2026-08-24 14:35 UTCEG score recompute
  22. 2026-08-23 00:40 UTCEG score recompute
  23. 2026-08-23 00:19 UTCEPSS rescore
  24. 2026-08-21 23:25 UTCEG score recompute
  25. 2026-08-21 22:54 UTCEG score recompute
  26. 2026-08-21 22:54 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-48105?
CVE-2026-48105 is a high vulnerability published on August 21, 2026. Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's Raft FSM (internal/cluster/raft/fsm.go:applyRegisterFile) accepts attacker-chosen file paths in manifest-registration proposals without validating them against the configured storage backend.…
When was CVE-2026-48105 disclosed?
CVE-2026-48105 was first published in the National Vulnerability Database on August 21, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48105 actively exploited?
CVE-2026-48105 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 93.3% of all scored CVEs.
What is the CVSS score of CVE-2026-48105?
CVE-2026-48105 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-48105?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48105, 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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