HowToFixMe
● Medium · CVSS 5.3

How to Fix CVE-2026-0597: SQL Injection in Supplier Management System

By the Sai Kiran Pandrala · Reviewed and edited by Sai Kiran Pandrala, Editor

⚡ At a glance
SeverityCVSS 5.3 - Medium
Actively exploited?Not currently listed in CISA KEV
Affected1.0
Fixed inNo patched version published; parameterize the query in source
Type (CWE)CWE-89: SQL Injection

Exploitation status

CISA has not added CVE-2026-0597 to its Known Exploited Vulnerabilities (KEV) catalog, and CISA's SSVC assessment records Exploitation as proof-of-concept rather than active. There is no government-confirmed evidence of in-the-wild abuse yet. SSVC also scores this issue as not Automatable with a partial technical impact, which is consistent with an authenticated single-field SQL injection rather than a worming, unauthenticated takeover.

Public exploit availability: a working exploit has been published. The VulDB record states the exploit "has been published and may be used," and the references include a public write-up at github.com/dhy-spec/cve/issues/1 tagged as an exploit. There is no Metasploit module linked, but the bar to reproduce this is low because it is a simple parameter injection. Do not treat it as low risk on the basis of "no KEV entry" alone.

What is CVE-2026-0597?

CVE-2026-0597 is a SQL injection flaw (CWE-89) in Campcodes Supplier Management System 1.0, a free PHP and MySQL web application. The vulnerable code lives in /retailer/edit_profile.php. When a logged-in retailer saves their profile, the value of the txtRetailerAddress form field is concatenated straight into a SQL statement instead of being passed as a bound parameter. An attacker who supplies crafted SQL inside that address field can break out of the intended string and run their own query against the application database.

The CVSS 4.0 vector is AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L (base 5.3, Medium); the CVSS 3.1 score is 6.3. The two facts that matter operationally are PR:L and AV:N: the attacker needs a low-privileged retailer login, but once they have one they can reach the bug remotely over the network with no user interaction. This is an authenticated SQL injection, not an unauthenticated remote code execution. CISA's SSVC assessment marks Technical Impact as partial and Automatable as no, which lines up with a single injectable field rather than a fully automated takeover.

Why this CVE matters

A SQL injection in a supplier or retailer portal is rarely "just" the one address field. The same database connection that serves edit_profile.php usually holds every retailer and supplier record, password hashes, and session data. With a UNION-based or boolean-blind payload an attacker who started as a single low-privileged retailer can read other accounts' credentials, escalate to an administrator login, and pivot from there. Because the application is freeware and the released version is 1.0, many deployments run with default credentials and no monitoring, which lowers the bar to getting that first foothold.

The exploit is public, so the realistic threat is an authenticated user (a real retailer, a shared demo account, or an attacker who registered or phished one login) turning a normal session into database-wide read and write access. Parameterizing the query closes the door; reviewing the database for tampering closes out the rest of the response.

Am I affected?

You are affected if you run the application and the version is 1.0:

Because this is a PHP source-code package rather than a versioned binary, the quickest check is to confirm the file exists. Look for retailer/edit_profile.php in your web root and grep the source for a query that builds an UPDATE on the retailer table using a string-concatenated txtRetailerAddress value. If that pattern is present and unparameterized, the install is exploitable.

How to fix CVE-2026-0597

There is no official patched release named in the CVE record. Only version 1.0 is listed, and it is affected. Do not wait for a version bump that may never ship for this freeware app. Because it is distributed as editable PHP source, the correct and durable fix is to rewrite the vulnerable query yourself so user input is bound, not concatenated.

Fix the code: parameterize the query (PHP / MySQLi)

Open retailer/edit_profile.php and find the statement that writes txtRetailerAddress into the database. Replace the string-concatenated query with a prepared statement so the address value can never change the structure of the SQL.

// VULNERABLE: address is concatenated straight into the SQL
// $sql = "UPDATE retailer SET address = '".$_POST['txtRetailerAddress']."' WHERE id = ".$id;
// mysqli_query($conn, $sql);

// FIXED: bind the address (and the id) as parameters
$stmt = $conn->prepare(
    "UPDATE retailer SET address = ? WHERE id = ?"
);
$stmt->bind_param("si", $_POST['txtRetailerAddress'], $id);
$stmt->execute();
$stmt->close();

If the codebase uses PDO instead of MySQLi, the equivalent is $pdo->prepare("UPDATE retailer SET address = :addr WHERE id = :id") followed by execute([':addr' => $_POST['txtRetailerAddress'], ':id' => $id]). Apply the same bound-parameter treatment to every query that touches request data, not just this one field. Single-field fixes in apps like this almost always leave sibling endpoints injectable.

Verify the fix worked

Confirm the injection no longer fires by submitting a classic test payload into the address field on a staging copy. Before the fix, a payload such as x' OR '1'='1 alters the query; after binding, it is stored and returned as a literal string.

If you cannot edit the code immediately

If you cannot touch the PHP source right away, reduce exposure rather than declaring it fixed:

Compromise hunting

Because a working exploit is public and only a low-privileged login is required, check whether the flaw was already used before you patched. The injection runs through MySQL, so the evidence lives in the database and the web server logs, not in OS package state.

Frequently asked questions

Is CVE-2026-0597 being exploited in the wild?

It is not on the CISA KEV catalog, and CISA's SSVC assessment records Exploitation as proof-of-concept rather than active. But a working exploit has been published in the VulDB references, so opportunistic abuse by anyone with a retailer login is realistic. Treat it as a real, exploitable bug, not a theoretical one.

Does an attacker need a login to exploit CVE-2026-0597?

Yes. The CVSS vector is PR:L, so the attacker needs at least a low-privileged retailer account. The injection sits in the txtRetailerAddress field of /retailer/edit_profile.php, which is only reachable after authenticating to the retailer portal. It is remotely reachable over the network, but it is not an unauthenticated bug.

Is there an official fixed version of Campcodes Supplier Management System?

No. No patched build is named in the CVE record; only version 1.0 is listed, and it is affected. Because the application ships as editable PHP source, the durable fix is to convert the edit_profile.php query (and every other request-driven query) to a bound prepared statement, as shown above, or to migrate off the unmaintained app.

Will a WAF rule fully mitigate CVE-2026-0597?

No. A WAF that blocks SQL metacharacters on txtRetailerAddress reduces opportunistic scanning, but skilled attackers can often encode around it. Parameterizing the query in source is the only durable fix; the WAF is a stopgap while you make that change.

References

This guide was assembled from the published CVE record (VulDB VDB-339506) and CISA's SSVC vulnrichment data. This CVE is not in the CISA KEV catalog. Always confirm against the source advisory before applying changes in production.

Understanding the injection point

It helps to picture exactly how the bug fires, because it explains why a code change, not a version upgrade, is the fix. The retailer portal renders a profile-edit form. When the retailer submits it, edit_profile.php takes the posted fields and writes them back to the database. The address field, txtRetailerAddress, is the one the researcher (credited as dhy123 on VulDB) found being placed into the SQL string without escaping or binding.

Consider an address value of ', credit_limit=999999 WHERE id=1 -- . If the surrounding query is built by concatenation, that input does not just set an address; it can rewrite other columns or comment out the rest of the statement. With a UNION-based payload the same field can pull rows from other tables (usernames, password hashes, supplier records) into the response the retailer sees. That is the whole exploit: one form field, one unbound parameter, full read and write reach into the application database within the privileges of the database user the app connects as.

Two characteristics keep the severity at Medium rather than Critical. First, PR:L: the attacker has to be logged in as a retailer, so this is not a drive-by against anonymous internet traffic. Second, CISA rates it not Automatable, reflecting that exploitation needs a valid session rather than a single unauthenticated request that a worm could fire blindly. Neither makes it safe to leave unpatched; both shape how urgently you should treat it relative to an unauthenticated CVE on the same host.

A note on sources

Everything in this guide is grounded in the published CVE record (VulDB VDB-339506) and CISA's SSVC vulnrichment data. The record names the vendor, product, version, file, and parameter; it provides the CVSS 4.0, 3.1, 3.0 and 2.0 vectors; and it confirms a published exploit. It does not name a fixed version, so this guide deliberately does not invent one — the remediation is the source-level parameterization above plus the Campcodes site for any future release. If the official advisory later publishes a patched build, apply it and re-verify against the steps in the verification section.

Other flaws in this area worth reviewing while you patch this one:

People also ask

Is CVE-2026-0597 being exploited in the wild?

It is not on the CISA KEV catalog and CISA's SSVC assessment records Exploitation as proof-of-concept, not active. However, a working exploit has been published in the VulDB references, so opportunistic abuse by anyone with a retailer login is realistic. Treat it as a real, exploitable bug.

Does an attacker need a login to exploit CVE-2026-0597?

Yes. The CVSS vector is PR:L, so the attacker needs a low-privileged retailer account. The injection sits in the txtRetailerAddress field of /retailer/edit_profile.php, reachable only after authenticating to the retailer portal. It is remote over the network but not unauthenticated.

Is there an official fixed version of Campcodes Supplier Management System?

No. No patched build is named in the CVE record; only version 1.0 is listed and it is affected. Because the app ships as editable PHP source, the durable fix is to convert the edit_profile.php query (and every request-driven query) to a bound prepared statement, or migrate off the unmaintained app.