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CVE-2026-3854

HIGH

8.8

Descricao

An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an attacker with push access to a repository to achieve remote code execution on the instance. During a git push operation, user-supplied push option values were not properly sanitized before being included in internal service headers. Because the internal header format used a delimiter character that could also appear in user input, an attacker could inject additional metadata fields through crafted push option values. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.

Detalhes CVE

Pontuacao CVSS v3.18.8

SeveridadeHIGH

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado3/10/2026

Ultima modificacao3/12/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

github:enterprise_server

Fraquezas (CWE)

CWE-77

Referencias

https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.24(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.19(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.15(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.12(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.6(product-cna@github.com)

https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.3(product-cna@github.com)

Correlacoes IOC

Sem correlacoes registradas

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