SecuriTricks - CVE-2026-3307

Description

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the owner_id parameter in the request body. Authorization was verified against the repository in the URL, but the action was applied to a different repository specified in the request body. The impact is limited to assigning existing trusted users as bypass reviewers; it does not allow adding arbitrary external users. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7, 3.19.4 and 3.20.1. This vulnerability was reported via the GitHub Bug Bounty program.

Product(s) Impacted

Vendor	Product	Versions
Github	Github Enterprise Server	<3.21, 3.14.25, 3.15.20, 3.16.16, 3.17.13, 3.18.7, 3.19.4, 3.20.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-639

Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	github	github_enterprise_server	<3.21	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.14.25	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.15.20	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.16.16	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.17.13	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.18.7	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.19.4	/	/	/	/	/	/	/
a	github	github_enterprise_server	3.20.1	/	/	/	/	/	/	/

References

https://docs.github.com/en/[email protected]/admin/release-notes#3.14.25

https://docs.github.com/en/[email protected]/admin/release-notes#3.15.20

https://docs.github.com/en/[email protected]/admin/release-notes#3.16.16

https://docs.github.com/en/[email protected]/admin/release-notes#3.17.13

https://docs.github.com/en/[email protected]/admin/release-notes#3.18.7

https://docs.github.com/en/[email protected]/admin/release-notes#3.19.4

https://docs.github.com/en/[email protected]/admin/release-notes#3.20.1

CVSS Score

5.3 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: LOW
User Interaction: NONE
Scope:
Confidentiality Impact: NONE
Integrity Impact: LOW
Availability Impact: NONE
Exploit Maturity: NOT_DEFINED

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: April 21, 2026, 11:16 p.m.
Last Modified: April 22, 2026, 9:23 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-3307