CVE-2026-82029Invoice Ninja < 5.13.28 Broken Access Control via Vendor Portal

Invoice Ninja before 5.13.28 contains a broken access control vulnerability that allows authenticated vendor-portal contacts to access documents belonging to other vendors and clients by exploiting authorization checks that validate only company_id scope instead of vendor ownership. Attackers can request GET /vendor/documents/{hashid}/download or POST /vendor/documents/download_multiple, enumerating predictable sequential Hashids document identifiers due to a default empty HASH_SALT, to read any invoice PDFs, contracts, payment receipts, and expense attachments within the company.

7.1 HIGHEPSS 0.23%Not in KEVNVD: Received

Last updated: 2026-11-05 19:17 UTC

OverviewCVSS details

7.1HIGHCVSS 4.0

Score source: VulnCheck (CNA)
NVD status: Received
Published: Nov 4, 2026
Assigner: VulnCheck

Affected

invoiceninja (invoiceninja)

Versions: before 5.13.28
Fixed in: 5.13.28

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact partial

EPSS · FIRST, scored Nov 7

0.23%chance of exploitation in 30 days

Higher than 14.58% of CVEs

CVSS 4.0 · VulnCheck (CNA)

7.1High

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

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: Low
User interaction: None
Confidentiality impact: High
Integrity impact: None
Availability impact: None
Confidentiality (other systems): None
Integrity (other systems): None
Availability (other systems): None

CVSS 3.1 · VulnCheck (CNA)

6.5Medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: None
Availability impact: None

NVD status: Received

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
7.1	HIGH	4.0VulnCheck (CNA)	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
6.5	MEDIUM	3.1VulnCheck (CNA)	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CVE ID: CVE-2026-82029
Status: Received
Assigner (CNA): VulnCheck
Published: Nov 4, 2026
Last modified: 2026-11-05 19:17 UTC
Weaknesses: CWE-639 · Authorization Bypass Through User-Controlled Key
CWE-862 · Missing Authorization

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 10:19 UTC.