CVE-2026-55098: Basekick-Labs arc · Information Exposure
Affects Basekick-Labs arcSource CVE Database V5
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.5 Medium : upgrade to 26.06.2 when convenient.
Data as of 30 Oct 2026, 20:38 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 6.5 |
|---|
- Patch
- Available – fixed in 26.06.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade Basekick-Labs arc to 26.06.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Basekick-Labsarc | Affected
| Fixed in
|
AI-suggested
Upgrade to Arc version 26.06.2 or later, which contains the official fix for this vulnerability. The vendor advisory confirms that the issue is resolved in this version. No additional mitigation actions are required once the upgrade is applied.
Description
CVE-2026-55098 is a vulnerability in Basekick-Labs' Arc time-series database prior to version 26.06.2. It allows unauthorized actors to bypass cross-database authorization controls via certain unblocked DuckDB table-valued I/O functions. This enables reading and enumeration of other tenants' time-series data and schema information within the allowed storage root. The issue was fixed in version 26.06.2.
References
- github.com/Basekick-Labs/arc/security/advisories/GHSA-93cm-2v4m-c56c (opens in a new tab)
- github.com/Basekick-Labs/arc/pull/495 (opens in a new tab)
- github.com/Basekick-Labs/arc/commit/5dc8f53b70a3871b16b0cebf328f07c578af7a45 (opens in a new tab)
- github.com/Basekick-Labs/arc/tree/v26.06.2 (opens in a new tab)