CVE-2026-8606
Essential information
- Published
- 27/05/2026 00:16
- Modified
- 27/05/2026 00:16
- Author
- —
- Creator
- —
- CVSS
- 7.0 HIGH (v3) 7.0 HIGH (v4.0)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
—
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/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
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Privileges required
- —
- User interaction
- —
- Scope
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- NETWORK
- Attack complexity
- HIGH
- Attack requirements
- PRESENT
- Privileges required
- NONE
- User interaction
- NONE
- Confidentiality (V)
- LOW
- Confidentiality (S)
- HIGH
- Integrity (V)
- NONE
- Integrity (S)
- HIGH
- Availability (V)
- NONE
- Availability (S)
- NONE
- Exploit maturity
- NOT_DEFINED
Description
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to cause the server to issue HTTP requests to internal services via the security advisories package lookup feature. By directing requests to an internal management service and measuring response timing, an attacker could infer the values of sensitive environment variables, including signing secrets and private keys. Exploitation required GitHub Packages to be enabled; on instances not running in private mode the vulnerability was exploitable without authentication, otherwise any authenticated user could exploit it. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21.1 and was fixed in versions 3.20.3, 3.19.7, 3.18.10, 3.17.16, and 3.16.19. This vulnerability was reported via the GitHub Bug Bounty program.
NVD status
- Status
- Received — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- [email protected]
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| github / github enterprise server | cpe:2.3:a:github:github_enterprise_server:<3.21.1:*:*:*:*:*:*:* |
| github / github enterprise server | cpe:2.3:a:github:github_enterprise_server:3.20.3:*:*:*:*:*:*:* |
| github / github enterprise server | cpe:2.3:a:github:github_enterprise_server:3.19.7:*:*:*:*:*:*:* |
| github / github enterprise server | cpe:2.3:a:github:github_enterprise_server:3.18.10:*:*:*:*:*:*:* |
| github / github enterprise server | cpe:2.3:a:github:github_enterprise_server:3.17.16:*:*:*:*:*:*:* |
| github / github enterprise server | cpe:2.3:a:github:github_enterprise_server:3.16.19:*:*:*:*:*:*:* |