# CVE-2026-81836: RooCodeInc Roo-Code OAuth Callback oauth.ts cleartext transmission

> Remote attackers can intercept sensitive OAuth data due to cleartext transmission in the archived Roo-Code developer tool.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Aug 2026
- **Updated:** 31 Aug 2026
- **Also known as:** GHSA-57j6-cfwj-h582

## What is CVE-2026-81836?

CVE-2026-81836 is a medium-severity vulnerability in RooCodeInc Roo-Code, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was detected in RooCodeInc Roo-Code up to 3.51.1. This vulnerability affects unknown code of the file src/integrations/claude-code/oauth.ts of the component OAuth Callback. The manipulation results in cleartext transmission of sensitive information. The attack may be performed from remote. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The exploit is now public and may be used. Multiple isses were reported to the vendor beforehand. They explain, that "they all apply to Roo Code, a project we no longer support - the repository was archived a while ago, and we don't encourage anyone to use it." This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information), CWE-310

## Which versions are affected by CVE-2026-81836?


## How do I fix CVE-2026-81836?

No fix has been published for CVE-2026-81836 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-81836 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81836 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-81836 and fix it if it is affected.

What it is: CVE-2026-81836 is a medium-severity vulnerability in RooCodeInc Roo-Code, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81836 exists.

Affected product: RooCodeInc Roo-Code. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2026-81836/ (Markdown: https://insights.sbomify.com/CVE-2026-81836/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-81836
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-81836
- OSV: https://osv.dev/vulnerability/CVE-2026-81836

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-81836/
Summaries are generated and may contain mistakes; the official description above is the record.