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🛡️ CVE-2026-58080 — milo

🟠 CVSS 8.2 — High ✅ No Known Exploit CWE-862 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In Eclipse Milo versions 1.0.0 through 1.1.4, OpcUaServerConfig.copy() fails to preserve a configured RoleMapper. On servers that rely on role permissions and construct the running configuration through copy(), sessions receive no role IDs and the default access controller skips role-permission checks, allowing an anonymous client where anonymous sessions are permitted to read role-permission metadata, invoke protected methods, or delete protected nodes.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity high, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Weakness class

CVE-2026-58080 is classified as CWE-862: Missing Authorization. No authorisation check is performed before carrying out a restricted action.

Affected software

CVE-2026-58080 is recorded against 1 package.

  • milo (from 1.0.0 up to 1.1.5)

Timeline and source

Published on 4 August 2026 and last revised on 5 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
gitlab.eclipse.org
gitlab.eclipse.org

Other advisories for this package

milo has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-862: Missing Authorization) in other software:

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
CWE CWE-862
Public Exploit ✅ No
Source NVD
Published 2026-08-04
Updated 2026-08-20
Modified 2026-08-05

Affected Packages

Software From version Fixed in
milo 1.0.0 1.1.5

Similar Threats

Site Security Check

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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