CVE-2021-39412: Multiple Cross Site Scripting (XSS) vulnerabilities exists in PHPGurukul Shopping v3.1 via the (1) callback pa

Routine

MEDIUM 6.1DOWNGRADE

CVE-2021-39412 is a medium-severity flaw (CVSS 6.1) affecting shopping portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple Cross Site Scripting (XSS) vulnerabilities exists in PHPGurukul Shopping v3.1 via the (1) callback parameter in (a) server_side/scripts/id_jsonp.php, (b) server_side/scripts/jsonp.php, and (c) scripts/objects_jsonp.php, the (2) value parameter in examples_support/editable_ajax.php, and the (3) PHP_SELF parameter in captcha/index.php.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-11-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: shopping portal project

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

Am I affected?

Timeline

2021-11-05 15:15 UTCPublished CVE record published
2026-06-17 04:03 UTCUpdated Record last modified

shopping portal project shopping portal DOWNGRADE

Affected: 3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1

1. Check installed version

apt-cache policy shopping-portal || rpm -q shopping-portal || shopping-portal --version

2. No fixed release: DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison shopping-portal sudo apt install shopping-portal=<VERSION_BEFORE_3.1> sudo apt-mark hold shopping-portal

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

dnf --showduplicates list shopping-portal sudo dnf downgrade shopping-portal-<VERSION_BEFORE_3.1> sudo dnf versionlock add shopping-portal

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-2021-39412?

shopping portal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-39412 being exploited?

CVE-2021-39412 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-2021-39412 affect?

CVE-2021-39412 affects shopping portal. Severity is medium (CVSS 6.1). Multiple Cross Site Scripting (XSS) vulnerabilities exists in PHPGurukul Shopping v3.1 via the (1) callback parameter in (a) server_side/scripts/id_jsonp.php, (b) server_side/scripts/jsonp.php, and (c) scripts/objects_jsonp.php, the (2) val

How urgent is CVE-2021-39412?

Priority 33/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-1956 HIGH 7.3 DOWNGRADE A vulnerability classified as critical has been found in code-projects Shopping Portal 1.0
CVE-2024-57668 HIGH 8.8 DOWNGRADE In Code-projects Shopping Portal v1.0, the insert-product.php page has an arbitrary file upload vulnerability.

References

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