Is CVE-2026-23513 actively exploited?

No active exploitation of CVE-2026-23513 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-23513 be exploited remotely?

Yes. CVE-2026-23513 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-23513?

CVE-2026-23513 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2026-23513

CWE-863Published: June 23, 2026· Updated: Jun 26, 2026

7.1

CVSS v3.1

EPSS:0.28%probability of exploitation in 30 daysPercentile:19.7th

Official Description

FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, a query-construction flaw in client list endpoints allowed authenticated clients to bypass tenant scoping and retrieve other clients’ data. Details

In ServiceTransaction::getSearchQuery() and Order\Service::getSearchQuery(), OR-based search/action filters were appended without grouping, allowing SQL operator precedence to evaluate OR clauses independently of the enforced client_id constraint. Crafted requests could therefore return records and metadata belonging to other clients, including identifiers, amounts, status, timestamps, and related fields. This issue was fixed in version 0.8.0.

NVD Source

Technical Analysis

CVE-2026-23513 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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