csirt@kutim:~/threat-intel/cve/CVE-2026-17556

Katalog CVE

CVSS 9.1 · Critical EPSS 0,80%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada github enterprise server. Skor CVSS 3.1 9.1 (Critical) menurut NVD.

Deskripsi (NVD)

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The X-GitHub-Request-Id request header was used without sanitization as a filesystem path segment for the upload buffer directory, so a traversal value pointed the buffer at an arbitrary path and the deferred cleanup routine recursively removed the traversed target. Exploitation required only network reachability to the instance and no authentication, and it worked even when private mode was enabled. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.21.4, 3.20.6, 3.19.10, 3.18.13 and 3.17.19. This vulnerability was reported via the GitHub Bug Bounty program.

Rincian

Terbit di NVD
5 Agustus 2026
Terakhir diubah
18 Agustus 2026
Status NVD
Analyzed
CVSS 3.1
9.1 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
EPSS (30 hari)
0,80% peluang dieksploitasi; lebih tinggi dari 55,6% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
github enterprise server Semua versi sebelum 3.17.19
github enterprise server Versi 3.18.0 hingga sebelum 3.18.13
github enterprise server Versi 3.19.0 hingga sebelum 3.19.10
github enterprise server Versi 3.20.0 hingga sebelum 3.20.6
github enterprise server Versi 3.21.0 hingga sebelum 3.21.4

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.