# AVideo has a SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses in Unauthenticated LiveLinks Proxy

Advisory record · `GHSA-p3gr-g84w-g8hh`

- **Identifiers:** `GHSA-p3gr-g84w-g8hh` · `CVE-2026-33480` · `PKSA-8d9c-5xxm-8vns`
- **State:** Confirmed
- **Severity:** CVSS 8.6 High
- **Critical:** No
- **Weakness (CWE):** [CWE-918](https://cwe.mitre.org/data/definitions/918.html)
- **Tags:** [Server-side request forgery (SSRF)](https://agentprime.io/advisories/tag/ssrf.md)
- **Published:** 20 Mar 2026
- **Updated:** 25 Mar 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 20 Mar 2026, 20:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `wwbn/avideo` (Packagist): affected `<=26.0`; no fixed version yet

## Machine-written summary

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

> GHSA-p3gr-g84w-g8hh affects wwbn/avideo at versions 26.0 and earlier, and no fixed version is listed. The SSRF check in isSSRFSafeURL() fails to block IPv4-mapped IPv6 addresses, and the unauthenticated LiveLinks proxy endpoint relies on that check. An anonymous remote attacker can use this to make the server fetch internal, localhost, or cloud metadata addresses and read the response, which may expose cloud credentials. No fix is listed, and the source suggests replacing the manual blocklist with PHP's FILTER_FLAG_NO_PRIV_RANGE and FILTER_FLAG_NO_RES_RANGE validation.

Written 3 Nov 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

- 8.6 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0033, the 26th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:26 UTC: First seen by agentprime
- 31 Oct 2026, 14:26 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-p3gr-g84w-g8hh)

## Sources

- [GitHub Advisory Database: GHSA-p3gr-g84w-g8hh](https://github.com/advisories/GHSA-p3gr-g84w-g8hh)
- [OSV: GHSA-p3gr-g84w-g8hh](https://osv.dev/vulnerability/GHSA-p3gr-g84w-g8hh)
- <https://github.com/WWBN/AVideo/security/advisories/GHSA-p3gr-g84w-g8hh>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-33480>
- <https://github.com/WWBN/AVideo/commit/75ce8a579a58c9d4c7aafe453fbced002cb8f373>
- <https://github.com/WWBN/AVideo>

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.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-p3gr-g84w-g8hh>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-p3gr-g84w-g8hh/>. Everything for agents: <https://agentprime.io/llms.txt>.