csirt@kutim:~/threat-intel/cve/CVE-2021-43837

Katalog CVE

CVSS 9.1 · Critical EPSS 5,2%

Kerentanan Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') pada vault-cli project vault-cli. Skor CVSS 3.1 9.1 (Critical) menurut NVD.

Deskripsi (NVD)

vault-cli is a configurable command-line interface tool (and python library) to interact with Hashicorp Vault. In versions before 3.0.0 vault-cli features the ability for rendering templated values. When a secret starts with the prefix `!template!`, vault-cli interprets the rest of the contents of the secret as a Jinja2 template. Jinja2 is a powerful templating engine and is not designed to safely render arbitrary templates. An attacker controlling a jinja2 template rendered on a machine can trigger arbitrary code, making this a Remote Code Execution (RCE) risk. If the content of the vault can be completely trusted, then this is not a problem. Otherwise, if your threat model includes cases where an attacker can manipulate a secret value read from the vault using vault-cli, then this vulnerability may impact you. In 3.0.0, the code related to interpreting vault templated secrets has been removed entirely. Users are advised to upgrade as soon as possible. For users unable to upgrade a workaround does exist. Using the environment variable `VAULT_CLI_RENDER=false` or the flag `--no-render` (placed between `vault-cli` and the subcommand, e.g. `vault-cli --no-render get-all`) or adding `render: false` to the vault-cli configuration yaml file disables rendering and removes the vulnerability. Using the python library, you can use: `vault_cli.get_client(render=False)` when creating your client to get a client that will not render templated secrets and thus operates securely.

Rincian

Terbit di NVD
16 Desember 2021
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
9.1 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-94: Improper Control of Generation of Code ('Code Injection')
EPSS (30 hari)
5,2% peluang dieksploitasi; lebih tinggi dari 92,2% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
vault-cli project vault-cli Versi 0.7.0 hingga sebelum 3.0.0

> 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, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.