# CVE-2023-3079: Google Chromium V8 Type Confusion

> A type confusion flaw in Chrome's V8 engine allows remote attackers to execute arbitrary code via a crafted HTML page.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 7 Jun 2023 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 5 Jun 2023
- **Updated:** 21 Oct 2025
- **Also known as:** DEBIAN-CVE-2023-3079, DSA-5420-1, GHSA-8mwf-hvfp-6xfg, openSUSE-SU-2023:0123-1, openSUSE-SU-2024:12985-1

## What is CVE-2023-3079?

CVE-2023-3079 is a high-severity memory corruption vulnerability in Couchbase Couchbase Server, published on 5 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Type confusion in V8 in Google Chrome prior to 114.0.5735.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Weakness: CWE-843 (Access of Resource Using Incompatible Type)

## Which versions are affected by CVE-2023-3079?

It affects 4 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `chromium` | SUSE:Package Hub 15 SP5 | All versions | 114.0.5735.106-bp155.2.4.1 |
| `chromium` | openSUSE:Leap 15.5 | All versions | 114.0.5735.106-bp155.2.4.1 |
| `chromium` | openSUSE:Tumbleweed | All versions | 114.0.5735.106-1.1 |

Products: Couchbase Couchbase Server, Debian Debian Linux, Fedoraproject Fedora, Google Chrome.

## How do I fix CVE-2023-3079?

Upgrade to a fixed version. US federal agencies must fix it by 28 Jun 2023.

## Is CVE-2023-3079 being exploited?

Yes. Attackers have exploited CVE-2023-3079 in the wild since at least 7 Jun 2023.

Public exploit code:

- https://github.com/mistymntncop/CVE-2023-3079 (github_poc): https://github.com/mistymntncop/CVE-2023-3079

## Other vulnerabilities in Couchbase Couchbase Server

- [CVE-2024-0519](https://insights.sbomify.com/CVE-2024-0519/): Google Chromium V8 Out-of-Bounds Memory Access (high 8.8, exploited in the wild)
- [CVE-2023-2033](https://insights.sbomify.com/CVE-2023-2033/): Google Chromium V8 Type Confusion (high 8.8, exploited in the wild)
- [CVE-2023-49930](https://insights.sbomify.com/CVE-2023-49930/): Missing authorization in n/a (critical 9.8)
- [CVE-2023-49931](https://insights.sbomify.com/CVE-2023-49931/): Missing authorization in n/a (critical 9.8)
- [CVE-2021-35943](https://insights.sbomify.com/CVE-2021-35943/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-3079 and fix it if it is affected.

What it is: CVE-2023-3079 is a high-severity memory corruption vulnerability in Couchbase Couchbase Server, published on 5 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: Yes. Attackers have exploited CVE-2023-3079 in the wild since at least 7 Jun 2023.

Affected product: Couchbase Couchbase Server. 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-2023-3079/ (Markdown: https://insights.sbomify.com/CVE-2023-3079/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-3079
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-3079
- OSV: https://osv.dev/vulnerability/CVE-2023-3079

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-3079/
Summaries are generated and may contain mistakes; the official description above is the record.