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Fencer Intel
high 8.8

CVE-2026-96627 json

Arcane: Delegated users:update permission allows admin account takeover via password reset (no privilege-hierarchy check)

published 26d ago modified 23d ago also EUVD-2026-103178 , GHSA-pw5q-rjx4-7f7p , GO-2026-6807

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 2.6.0, UpdateUser in backend/api/handlers/users.go sets PasswordHash for any target without comparing caller and target privilege. A holder of delegated users:update permission can submit a password change for the global administrator, replace the administrator password, and authenticate as that account, resulting in complete global administrator account takeover. This issue is fixed in version 2.6.0.

Patch / fix

  • go github.com/getarcaneapp/arcane/backend/v2 2.6.0
  • arcane arcane 2.6.0
  • getarcane arcane 2.6.0

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23d ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/getarcaneapp/arcane/security/advisories/GHSA-pw5q-rjx4-7f7p referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/getarcaneapp/arcane/backend/v2
<2.6.0
2.6.0
go github.com/getarcaneapp/arcane/backend
all versions
 no fix listed

Affected products

  • getarcaneapp arcane

Classification

Weakness
  • CWE-266 Incorrect Privilege Assignment
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.