# CVE-2023-36266: Information disclosure in n/a

> Local attackers can read sensitive plaintext passwords from memory in Keeper Password Manager, potentially persisting after logout due to browser memory management.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jul 2023
- **Updated:** 9 Jun 2025
- **Also known as:** GHSA-qxpv-rxq7-rg72

## What is CVE-2023-36266?

CVE-2023-36266 is a medium-severity vulnerability in n/a, published on 12 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in Keeper Password Manager for Desktop version 16.10.2 (fixed in 17.2), and the KeeperFill Browser Extensions version 16.5.4 (fixed in 17.2), allows local attackers to gain sensitive information via plaintext password storage in memory after the user is already logged in, and may persist after logout. NOTE: the vendor disputes this for two reasons: the information is inherently available during a logged-in session when the attacker can read from arbitrary memory locations, and information only remains available after logout because of memory-management limitations of web browsers (not because the Keeper technology itself is retaining the information).

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2023-36266?

It affects 2 products.


Products: Keepersecurity Keeper, Keepersecurity Keeperfill.

## How do I fix CVE-2023-36266?

No fix has been published for CVE-2023-36266 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-36266 being exploited?

There is no known exploitation of CVE-2023-36266 in the wild and no public exploit code.

Public exploit code:

- Keeper Security desktop 16.10.2 & Browser Extension 16.5.4 - Password Dumping (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-36266 and fix it if it is affected.

What it is: CVE-2023-36266 is a medium-severity vulnerability in n/a, published on 12 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-36266 in the wild and no public exploit code.

Affected product: n/a. 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-2023-36266/ (Markdown: https://insights.sbomify.com/CVE-2023-36266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-36266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-36266
- OSV: https://osv.dev/vulnerability/CVE-2023-36266

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-36266/
Summaries are generated and may contain mistakes; the official description above is the record.