CVE-2026-112178
MISP Proposal ACL Bypass: Incomplete Distribution Level Check in Shadow Attribute Access Control
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes.
-
A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility)
-
The owning organisation could not view proposals on its own org-only attributes
Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions.
Affected: <2.5.48
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
MISP Proposal ACL Bypass: Incomplete Distribution Level Check in Shadow Attribute Access Control
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes.
-
A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility)
-
The owning organisation could not view proposals on its own org-only attributes
Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions.
Affected: <2.5.48
- Record
CVE-2026-112178- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-104127
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes.
-
A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility)
-
The owning organisation could not view proposals on its own org-only attributes
Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions.
Affected: <2.5.48
- Record
EUVD-2026-104127- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9h3q-39v8-fmg5
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The...
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes.
-
A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility)
-
The owning organisation could not view proposals on its own org-only attributes
Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions.
Affected: <2.5.48
- Record
GHSA-9h3q-39v8-fmg5- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes.
-
A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility)
-
The owning organisation could not view proposals on its own org-only attributes
Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions.
Affected: <2.5.48
- Record
CVE-2026-112178- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
MISP Proposal ACL Bypass: Incomplete Distribution Level Check in Shadow Attribute Access Control
MISP contains an access control flaw in the proposal (shadow attribute) visibility logic. The authorization check accepted any attribute or object carrying one of the user's sharing groups without verifying the distribution level, and denied the owning organisation access to proposals on its own organisation-only attributes.
-
A user belonging to a sharing group could view proposals on attributes or objects with that sharing group, regardless of the attribute's distribution level (levels 1-3 should restrict visibility)
-
The owning organisation could not view proposals on its own org-only attributes
Security impact: Unauthorized disclosure of proposed attribute changes to users who should not have access based on distribution level restrictions.
Affected: <2.5.48
- Record
CVE-2026-112178- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-112178 is a high vulnerability (CVSS 7.1) in Misp, published October 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. No source names a fixed version.