CVE-2017-20126: A vulnerability was found in KB Affiliate Referral Script 1.0

This month

HIGH 7.3REMOTEDOWNGRADE

CVE-2017-20126 is a high-severity flaw (CVSS 7.3) affecting kb affiliate referral script. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in KB Affiliate Referral Script 1.0. It has been classified as critical. This affects an unknown part of the file /index.php. The manipulation of the argument username/password with the input 'or''=' leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-89
Published	2022-07-13
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: kb affiliate referral script project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-07-13 18:15 UTCPublished CVE record published
2026-06-17 01:15 UTCUpdated Record last modified

kb affiliate referral script project kb affiliate referral script DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy kb-affiliate-referral-script || rpm -q kb-affiliate-referral-script || kb-affiliate-referral-script --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison kb-affiliate-referral-script sudo apt install kb-affiliate-referral-script=<VERSION_BEFORE_1.0> sudo apt-mark hold kb-affiliate-referral-script

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kb-affiliate-referral-script sudo dnf downgrade kb-affiliate-referral-script-<VERSION_BEFORE_1.0> sudo dnf versionlock add kb-affiliate-referral-script

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-20126?

kb affiliate referral script: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-20126 being exploited?

CVE-2017-20126 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-20126 affect?

CVE-2017-20126 affects kb affiliate referral script. Severity is high (CVSS 7.3). A vulnerability was found in KB Affiliate Referral Script 1.0. It has been classified as critical. This affects an unknown part of the file /index.php. The manipulation of the argument username/password with the input 'or''=' leads to sql i

How urgent is CVE-2017-20126?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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