NVD / CVE Program· CNA GitHub_P

CVE-2023-6847: Improper Authentication in GitHub Enterprise Server leading to Authentication Bypass for Public Repository Data

Noroxi assessment

Priority: Monitor (action score 30/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.81% (FIRST EPSS); higher than 56.7% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: GitHub Enterprise Server 3.10.4, 3.11.1, 3.9.7.

Low priority for now. Upgrade to GitHub Enterprise Server 3.10.4, 3.11.1, 3.9.7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed a bypass of Private Mode by using a specially crafted API request. To exploit this vulnerability, an attacker would need network access to the Enterprise Server appliance configured in Private Mode. This vulnerability affected all versions of GitHub Enterprise Server since 3.9 and was fixed in version 3.9.7, 3.10.4, and 3.11.1. This vulnerability was reported via the GitHub Bug Bounty program.

HighCVSS 7.5 · v3.1—No exploit Fix available

Published: Dec 21, 2023
Updated: Jun 17, 2026
EPSS: 0.8% · 56th percentile
CWE: CWE-287

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.8%

CNA vs NVD score

NVD: 7.5
CNA · GitHub_P: 7.5; agree

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
github	enterprise server	cpe:2.3:a:github:enterprise_server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

github enterprise server3.9.0 and later · before 3.9.7
github enterprise server3.10.0 and later · before 3.10.4
github enterprise server3.11.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_P). Independent of NVD's CPE analysis and usually ahead of it.

GitHub Enterprise Server
- 3.9.0 and later · before 3.9.7affected · semver
- 3.10.0 and later · before 3.10.4affected · semver
- 3.11.0 and later · before 3.11.1affected · semver

Same product

github: all records

Other highest-scoring records for the same primary product.

CVE-2024-0200Unsafe Reflection in Github Enterprise Server leading to Command Injection
61This week
CVE-2024-0507Privilege Escalation by Code Injection in the Management Console in GitHub Enterprise Server
55Plan
CVE-2026-3854Remote code execution via git push option injection in GitHub Enterprise Server
46Plan

Published before and after this one in the same product

← EarlierCVE-2023-6803Dec 21, 2023 · Race Condition allows Unauthorized Outside Collaborator
16Monitor
← EarlierCVE-2023-6804Dec 21, 2023 · Improper Privilege Management allows for arbitrary workflows to be run
22Monitor
Later →CVE-2024-1082Feb 13, 2024 · Path traversal vulnerability in GitHub Enterprise Server that allowed arbitrary file read with a specially crafted GitHub Pages artifact upload
26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
GitHub Enterprise Server	3.10.4	Vendor (CNA)
GitHub Enterprise Server	3.11.1	Vendor (CNA)
GitHub Enterprise Server	3.9.7	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

ahacker1finder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2023-23761258 days apartImproper authentication vulnerability in GitHub Enterprise Server leading to modification of secret gists
21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2024-050726 days apartPrivilege Escalation by Code Injection in the Management Console in GitHub Enterprise Server
55Plan
CVE-2024-135554 days apartCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement Console
37Monitor
CVE-2024-135454 days apartCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement Console
33Monitor
CVE-2023-466450 days apartPath traversal in GitHub Enterprise Server leading to arbitrary file reading when building a GitHub Pages site
19Monitor

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1app.use("/admin", requireSession, adminRouter);
2

3// Route added later skips the middleware
4app.post("/admin-api/config", updateConfig);

Fixed

1const admin = express.Router();
2admin.use(requireSession, requireRole("admin"));
3

4admin.post("/config", updateConfig);
5app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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References

docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records