How severe is CVE-2026-28502?

No CVSS score has been assigned to CVE-2026-28502 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-28502?

CVE-2026-28502 affects the following packages: wwbn/avideo (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2026-28502?

The records we use list no patched version of wwbn/avideo for CVE-2026-28502. 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-2026-28502 in my Packagist dependencies?

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

How do I mitigate CVE-2026-28502 if there is no patch (or I can't update yet)?

Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Is CVE-2026-28502 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-28502 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-28502?

CVE-2026-28502 has an EPSS (Exploit Prediction Scoring System) score of 0.8%, placing it in the 56th 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. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-28502?

CVE-2026-28502 is classified as Unrestricted File Upload (CWE-434). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-28502 published, and has it been updated?

CVE-2026-28502 was published on March 6, 2026 and was last updated on October 28, 2026. 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

CVE-2026-28502 — avideo

Fix: WWBN/AVideo@b739aee

CVE-2026-28502 is a Unrestricted File Upload vulnerability in wwbn/avideo. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

WWBN AVideo: Authenticated Remote Code Execution via Unsafe Plugin ZIP Extraction

Also known asGHSA-v8jw-8w5p-23g3

Published

Mar 6, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

See advisory

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-28502.

EPSS Exploitation Probability

via FIRST.org ↗

0.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs56th percentile — riskier than 56% of all scored CVEsHighest risk

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

Real-World Exposure

1 pkg affected

🐘wwbn/avideo

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

Summary

An authenticated Remote Code Execution (RCE) vulnerability was identified in AVideo related to the plugin upload/import functionality.

The issue allowed an authenticated administrator to upload a specially crafted ZIP archive containing executable server-side files. Due to insufficient validation of extracted file contents, the archive was extracted directly into a web-accessible plugin directory, allowing arbitrary PHP code execution.

Vulnerability Type

Remote Code Execution (RCE)
CWE-434: Unrestricted Upload of File with Dangerous Type

Affected Versions

All versions up to and including 22.x.

Fixed Version

A fix is expected to be released in version 23.

Root Cause

The system validated only the ZIP extension of uploaded plugin packages but did not enforce a strict allowlist of file types within the archive. Extracted files were placed directly in a web-accessible directory without preventing execution of server-side scripts.

Impact

An authenticated administrator could execute arbitrary code on the server, resulting in full system compromise, including:

Confidentiality loss
Integrity loss
Availability impact

Remediation

Upgrade immediately to AVideo version 23 or later.

Version 23 introduces improved validation and secure handling of plugin extraction.

Workarounds

If upgrade is not immediately possible:

Disable plugin upload/import functionality.
Configure the web server to prevent execution of PHP files inside plugin upload directories.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`wwbn/avideo`	all versions	No fix

Affected Products

1 product · 1 configurations

Application

avideowwbn

< 24.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for wwbn/avideo, 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 wwbn/avideo for CVE-2026-28502. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
Mitigate without a patch
Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Frequently Asked Questions

## Summary An authenticated Remote Code Execution (RCE) vulnerability was identified in AVideo related to the plugin upload/import functionality. The issue allowed an authenticated administrator to upload a specially crafted ZIP archive containing executable server-side files. Due to insufficient validation of extracted file contents, the archive was extracted directly into a web-accessible plugin directory, allowing arbitrary PHP code execution. ## Vulnerability Type - Remote Code Execution (RCE) - CWE-434: Unrestricted Upload of File with Dangerous Type ## Affected Versions - All versions

O3 Security · Impact-Aware SCA

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