# CVE-2026-81505: Convoy: Cross-Tenant Source IDOR Leaks Plaintext Message Broker Credentials

> Authenticated users can access other tenants' webhook source records and plaintext message broker credentials by manipulating source IDs.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-p5vg-v7mj-f6q4, GO-2026-6523

## What is CVE-2026-81505?

CVE-2026-81505 is a high-severity missing authorization vulnerability in frain-dev convoy, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Convoy is a cloud native webhooks gateway. Prior to 26.6.8, Convoy's GET /api/v1/projects/{projectID}/sources/{sourceID} endpoint authorizes access to the project in the URL, but Handler.GetSource calls sources.Service.FindSourceByID() and fetches the Source only by sourceID without confirming that its ProjectID matches the authorized project. An authenticated user or project-scoped API key holder can substitute another tenant's Source identifier and receive that Source's complete record, including unredacted AMQP, Kafka, SQS, or Google PubSub credentials. The list endpoint remains project-scoped; the single-item Source lookup is affected. This issue is fixed in version 26.6.8.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-81505?

3 open source packages ship an affected version, including github.com/frain-dev/convoy.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/frain-dev/convoy` | Go | All versions | 0.9.3-0.20260724092134-1cc67cd16fb1 |
| `github.com/frain-dev/convoy` | Go | All versions | 0.9.3-0.20260724092134-1cc67cd16fb1 |
| `github.com/frain-dev/convoy` | Go | All versions | 0.9.3-0.20260724092134-1cc67cd16fb1 |

## How do I fix CVE-2026-81505?

Upgrade github.com/frain-dev/convoy to 0.9.3-0.20260724092134-1cc67cd16fb1 or later.

## Is CVE-2026-81505 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81505 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-81505 and fix it if it is affected.

What it is: CVE-2026-81505 is a high-severity missing authorization vulnerability in frain-dev convoy, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81505 exists.

Affected packages and fixed versions:
- github.com/frain-dev/convoy (Go): affected all versions; fixed in 0.9.3-0.20260724092134-1cc67cd16fb1
- github.com/frain-dev/convoy (Go): affected all versions; fixed in 0.9.3-0.20260724092134-1cc67cd16fb1
- github.com/frain-dev/convoy (Go): affected all versions; fixed in 0.9.3-0.20260724092134-1cc67cd16fb1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-81505/ (Markdown: https://insights.sbomify.com/CVE-2026-81505/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-81505
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-81505
- OSV: https://osv.dev/vulnerability/CVE-2026-81505

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-81505/
Summaries are generated and may contain mistakes; the official description above is the record.