Public proof of conceptFix available

CVE-2026-33478

A public proof of concept exists; no exploitation attested.

Published2026-03-23
WeaknessCWE-284 · CWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

WWBN AVideo is an open source video platform. In versions up to and including 26.0, multiple vulnerabilities in AVideo's CloneSite plugin chain together to allow a completely unauthenticated attacker to achieve remote code execution. The `clones.json.php` endpoint exposes clone secret keys without authentication, which can be used to trigger a full database dump via `cloneServer.json.php`. The dump contains admin password hashes stored as MD5, which are trivially crackable. With admin access, the attacker exploits an OS command injection in the rsync command construction in `cloneClient.json.php` to execute arbitrary system commands. Commit c85d076375fab095a14170df7ddb27058134d38c contains a patch.

Timeline

dates in UTC

2026-03-2315:16CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-33478?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-33478?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Wwbn avideo

Branch	Affected	Fixed in	Source
26.0	≤ 26.0	no fix published	NVD

wwbn/avideo

Branch	Affected	Fixed in	Source
26.0	≤ 26.0	no fix published	OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

github.comPatch
github.comMitigation · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionpoc2026-03-23
OpenCVESSVC decisionpoc—
CNACVSS 3.110read 2026-10-23
CNAweakness (CWE)CWE-284, CWE-78read 2026-10-23
NVDweakness (CWE)CWE-78read 2026-10-23
FIRST EPSSEPSS score11.2 %read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published: 2026-03-23
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-33478?

Is CVE-2026-33478 actively exploited?

A proof-of-concept exploit exists for CVE-2026-33478, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-33478?

CVE-2026-33478 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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