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Advisory record · GHSA-cmcr-q4jf-p6q9

WWBN AVideo has an Allowlisted downloadURL media extensions bypass SSRF protection and enable internal response exfiltration (Incomplete fix for CVE-2026-27732)

CVSS 7.1 HighEPSS 0.0021 · 11th percentile

Published by the GitHub Advisory Database at 8 Apr 2026, 00:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
WWBN/AVideoPackagist<=26.0No fixed version yet
Identifiers
GHSA-cmcr-q4jf-p6q9 · CVE-2026-39370 · PKSA-k95w-1pmg-ryfd
Weakness (CWE)
CWE-918
Tags
Published
8 Apr 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

AVideo (WWBN/AVideo, Packagist) versions up to and including 26.0 are affected. The upload-by-URL encoder accepts a downloadURL ending in common media or archive extensions and skips its SSRF validation for those, so an authenticated uploader can make the server fetch internal HTTP resources and store the response as retrievable media. The source describes this as an incomplete fix for CVE-2026-27732. No fixed version is listed in the source, and the source gives no specific mitigation beyond recommended code changes.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.1 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0021, the 11th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:02 UTC First seen by agentprime
  2. 31 Oct 2026, 14:02 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.