PatchTheCVECVE-2026-42461: Arcane is an interface for managing Docker containers, images, networks, and volumes
CVE-2026-42461 is a high-severity flaw (CVSS 7.5) affecting arcane. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to version 1.18.0, four GET endpoints under /api/templates* in Arcane's Huma backend are registered without any Security requirement, allowing any unauthenticated network client to list and read the full Compose YAML and .env content of every custom template stored in the instance. Because Arcane's UI exposes a "Save as Template" flow on the project / swar
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.3% (top 30%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2026-05-09 |
| Last modified | 2026-07-24 |
Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Nuclei scan template: Arcane < 1.18.0 - Unauthenticated Template and Env Disclosure
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-42461?
arcane: upgrade to 1.18.0. Exact commands for each OS are on this page.
Is CVE-2026-42461 being exploited?
CVE-2026-42461 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-42461 affect?
CVE-2026-42461 affects arcane. Severity is high (CVSS 7.5). Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to version 1.18.0, four GET endpoints under /api/templates* in Arcane's Huma backend are registered without any Security requirement, allowing any u
How urgent is CVE-2026-42461?
Priority 54/100. High severity; Remotely exploitable, no login, no user action; On your watchlist
Software pages
Related CVEs
- CVE-2026-40242 HIGH 7.2 UPGRADE Arcane is an interface for managing Docker containers, images, networks, and volumes