How severe is CVE-2019-14470?

CVE-2019-14470 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2019-14470?

CVE-2019-14470 affects the following packages: cosenary/instagram (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2019-14470?

The records we use list no patched version of cosenary/instagram for CVE-2019-14470. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

How do I detect CVE-2019-14470 in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for cosenary/instagram, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2019-14470 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2019-14470 actively exploited in the wild?

Yes. There are 3 known exploit references for CVE-2019-14470, including 1 documented proof-of-concept exploit on Exploit-DB and 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2019-14470?

CVE-2019-14470 has an EPSS (Exploit Prediction Scoring System) score of 83.0%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2019-14470?

CVE-2019-14470 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Is there exploit tooling available for CVE-2019-14470?

A Nuclei detection template exists for CVE-2019-14470, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2019-14470 published, and has it been updated?

CVE-2019-14470 was published on May 24, 2022 and was last updated on December 2, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

CVE-2019-14470 — instagram

MEDIUM

CVE-2019-14470 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in cosenary/instagram. 3 public exploit or proof-of-concept references are indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Cosenary Instagram-PHP-API contains reflected XSS vulnerability

Published

May 24, 2022

Updated

Dec 2, 2024

Affected

1 pkg

Patched

See advisory

Exploits

3 known

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

83.0%probability of exploitation in next 30 days

Very High Risk0.00%

Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

🐘cosenary/instagram

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

cosenary Instagram-PHP-API (aka Instagram PHP API V2), used in the UserPro plugin through 4.9.32 for WordPress, is vulnerable to cross-site scripting via the example/success.php error_description parameter.

Vulnerable code:

    if (isset($_GET['error'])) {
        echo 'An error occurred: ' . $_GET['error_description'];
    }

Proof-of-Concept:

https://domain.tld/wp-content/plugins/userpro/lib/instagram/vendor/cosenary/instagram/example/success.php?error=&error_description=<PAYLOAD>

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`cosenary/instagram`	all versions	No fix

Affected Products

2 products · 2 configurations

Application

instagram-php-apiinstagram-php-api_project

all

Application

user prouserproplugin

≤ 4.9.32

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-47304webappsphp

WordPress Plugin UserPro 4.9.32 - Cross-Site Scripting

by Damian Ebelties · Aug 26, 2019

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for cosenary/instagram, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
The records we use list no patched version of cosenary/instagram for CVE-2019-14470. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

How to detect CVE-2019-14470

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2019-14470 -u https://target

Template: WordPress UserPro 4.9.32 - Cross-Site Scripting
Severity: medium
Impact: Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
Remediation: Update to the latest version of UserPro or apply the provided patch to fix the XSS vulnerability.

Template by ProjectDiscovery nuclei-templates (daffainfo), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

cosenary Instagram-PHP-API (aka Instagram PHP API V2), used in the UserPro plugin through 4.9.32 for WordPress, is vulnerable to cross-site scripting via the [example/success.php](https://github.com/cosenary/Instagram-PHP-API/blob/master/example/success.php#L36 ) error_description parameter. Vulnerable code: ```php if (isset($_GET['error'])) { echo 'An error occurred: ' . $_GET['error_description']; } ``` Proof-of-Concept: `https://domain.tld/wp-content/plugins/userpro/lib/instagram/vendor/cosenary/instagram/example/success.php?error=&error_description=<PAYLOAD>`

O3 Security · Impact-Aware SCA

Is CVE-2019-14470 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

Timeline

First exploit

Aug 26, 2019

Disclosed

May 24, 2022

Last updated

Dec 2, 2024

Identifiers

CVE-2019-14470

References

Advisorynvd.nist.gov · CVE 2019 14470 Webgithub.com · success Webwpvulndb.com Webexploit-db.com Webpacketstormsecurity.com · WordPress UserPro 4.9.32 Cross Site Scripting Packagegithub.com · Instagram PHP API

Related vulnerabilities

This CVE is medium severity; 6 of 8 other CVEs with CWE-79 are rated as high or higher (top: high).

CVE-2026-126075CVE-2026-126063CVE-2026-110802CVE-2026-123364CVE-2026-118670CVE-2026-88986CVE-2026-63197CVE-2026-55649Browse all CWE-79

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedDec 2, 2024