CVE-2026-0933
published 2026-01-20CVE-2026-0933: SummaryA command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command. The issue occurs because the `--commit-hash`…
PriorityP269critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAH
EPSS
1.39%
69.0th percentile
SummaryA command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command. The issue occurs because the `--commit-hash` parameter is passed directly to a shell command without proper validation or sanitization, allowing an attacker with control of `--commit-hash` to execute arbitrary commands on the system running Wrangler.
Root causeThe commitHash variable, derived from user input via the --commit-hash CLI argument, is interpolated directly into a shell command using template literals (e.g., execSync(`git show -s --format=%B ${commitHash}`)). Shell metacharacters are interpreted by the shell, enabling command execution.
ImpactThis vulnerability is generally hard to exploit, as it requires --commit-hash to be attacker controlled. The vulnerability primarily affects CI/CD environments where `wrangler pages deploy` is used in automated pipelines and the
--commit-hash parameter is populated from external, potentially untrusted sources. An attacker could exploit this to:
* Run any shell command.
* Exfiltrate environment variables.
* Compromise the CI runner to install backdoors or modify build artifacts.
Credits Disclosed responsibly by kny4hacker.
Mitigation
* Wrangler v4 users are requested to upgrade to Wrangler v4.59.1 or higher.
* Wrangler v3 users are requested to upgrade to Wrangler v3.114.17 or higher.
* Users on Wrangler v2 (EOL) should upgrade to a supported major version.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cloudflare | wrangler | — | — |
| cloudflare | wrangler | >= 2.0.15 < 3.114.17 | 3.114.17 |
| cloudflare | wrangler | >= 2.0.15 < 3.114.17 | 3.114.17 |
| cloudflare | wrangler | >= 4.0.0 < 4.59.1 | 4.59.1 |
| cloudflare | wrangler | >= 4.0.0 < 4.59.1 | 4.59.1 |
| cloudflare | wrangler | v3.0.0 – v3.114.16 | — |
| cloudflare | wrangler | v4.0.0 – v4.59.0 | — |
CVSS provenance
nvdv3.19.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv4.07.7HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
Wrangler affected by OS Command Injection in `wrangler pages deploy`
osv·2026-01-21
CVE-2026-0933 [HIGH] Wrangler affected by OS Command Injection in `wrangler pages deploy`
Wrangler affected by OS Command Injection in `wrangler pages deploy`
**Summary**
A command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command. The issue occurs because the `--commit-hash` parameter is passed directly to a shell command without proper validation or sanitization, allowing an attacker with control of `--commit-hash` to execute arbitrary commands on the system running Wrangler.
**Root cause**
The `commitHash` variable, derived from user input via the `--commit-hash` CLI argument, is interpolated directly into a shell command using template literals (e.g., ``execSync(`git show -s --format=%B ${commitHash}`)``). Shell metacharacters are interpreted by the shell, enabling command execution.
**Impact**
This vulnerability is genera
GHSA
Wrangler affected by OS Command Injection in `wrangler pages deploy`
ghsa·2026-01-21
CVE-2026-0933 [HIGH] CWE-78 Wrangler affected by OS Command Injection in `wrangler pages deploy`
Wrangler affected by OS Command Injection in `wrangler pages deploy`
**Summary**
A command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command. The issue occurs because the `--commit-hash` parameter is passed directly to a shell command without proper validation or sanitization, allowing an attacker with control of `--commit-hash` to execute arbitrary commands on the system running Wrangler.
**Root cause**
The `commitHash` variable, derived from user input via the `--commit-hash` CLI argument, is interpolated directly into a shell command using template literals (e.g., ``execSync(`git show -s --format=%B ${commitHash}`)``). Shell metacharacters are interpreted by the shell, enabling command execution.
**Impact**
This vulnerability is genera
No detection rules found.
No public exploits indexed.
2026-01-20
Published