# CVE-2026-90597 — itsourcecode Sales and Inventory System

> As of 2026-09-13, CVE-2026-90597 is a MEDIUM-severity vulnerability in itsourcecode Sales and Inventory System, CVSS v3.1 6.3, EPSS 0.2% (10.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-90597 as of 2026-09-13; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-13

## What is CVE-2026-90597?

A security vulnerability has been detected in itsourcecode Sales and Inventory System 1.0. The affected element is an unknown function of the file /pages/sup_edit1.php. Such manipulation of the argument ID leads to sql injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

The record classifies CVE-2026-90597 under weakness classes [CWE-89](https://intel.threadlinqs.com/cwe/CWE-89), [CWE-74](https://intel.threadlinqs.com/cwe/CWE-74). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 22 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.3 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R`)
- **CVSS v4.0 base score:** 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 10.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-13

## Is CVE-2026-90597 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [itsourcecode](https://intel.threadlinqs.com/vendors/itsourcecode): Sales and Inventory System

## How to fix CVE-2026-90597

No vendor patch reference has been recorded for CVE-2026-90597 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-90597

No threat campaign in the Threadlinqs corpus currently references CVE-2026-90597, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-09-14.

**Exploit and proof of concept**

- [github.com — exploit](https://github.com/ltranquility/cve_submit/issues/25)

**Technical analysis**

- [vuldb.com — vdb entry](https://vuldb.com/vuln/403179)

**Third-party advisory**

- [vuldb.com — signature](https://vuldb.com/vuln/403179/cti)
- [vuldb.com — third party advisory](https://vuldb.com/cve/CVE-2026-90597)
- [vuldb.com — third party advisory (913791)](https://vuldb.com/submit/913791)

**Issue tracking and product pages**

- [itsourcecode.com — product](https://itsourcecode.com/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-90597
Full detection coverage and IOCs for threats exploiting CVE-2026-90597 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp