CVE-2026-33352: AVideo has an Unauthenticated SQL Injection via `doNotShowCats` Parameter (Backslash Escape Bypass)

Should you act?

Critical and remotely reachable

No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
• EPSS 0.5%, percentile 45: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 45% of all scored CVEs (low). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
• Only applies if your dependency tree includes wwbn/avideo (Composer (PHP)) <= 26.0, no fixed version listed. Check your lockfile, including transitive dependencies.

What it is

WWBN AVideo is an open source video platform. Prior to version 26.0, an unauthenticated SQL injection vulnerability exists in objects/category.php in the getAllCategories() method. The doNotShowCats request parameter is sanitized only by stripping single-quote characters (strreplace("'", '', ...)), but this is trivially bypassed using a backslash escape technique to shift SQL string boundaries. The parameter is not covered by any of the application's global input filters in objects/security.php. Version 26.0 contains a patch for the issue.

From the GitHub advisory

Summary

An unauthenticated SQL injection vulnerability exists in objects/category.php in the getAllCategories() method. The doNotShowCats request parameter is sanitized only by stripping single-quote characters (strreplace("'", '', ...)), but this is trivially bypassed using a backslash escape technique to shift SQL string boundaries. The parameter is not covered by any of the application's global input filters in objects/security.php.

Affected Component

File: objects/category.php, lines 386-394, inside method getAllCategories()

Root Cause

Weakness type: CWE-89.

Product: wwbn/avideo (Composer (PHP)) · Assigned by: GitHub_M · Published: 2026-03-23

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
• CISA SSVC assessment: exploitation poc, automatable yes, technical impact total.
• FIRST EPSS (model of 2026-10-21): 0.55% probability of exploitation activity in the next 30 days; percentile 45.

Timeline

• 2026-03-19 — GitHub-reviewed advisory GHSA-mcj5-6qr4-95fj published (critical)
• 2026-03-23 — CVE record published by GitHub_M
• 2026-03-24 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-mcj5-6qr4-95fj github.com
2. CVE.org record CVE-2026-33352 cve.org
3. NVD entry CVE-2026-33352 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com
2. github.com github.com

Critical Composer (PHP) advisories · Today’s Security Digest