High [CVE-2026-76233] Arbitrary command execution via gleam manager command injection
This high-severity Red Hat Linux advisory covers CVE-2026-76233.
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Summary
Renovate versions from 39.53.0 before 40.33.0 contain a command injection vulnerability in the gleam manager where the depName parameter is appended to gleam deps update commands without proper sanitization. Attackers with repository write access can craft malicious gleam.toml files to execute arbitrary commands on the machine running Renovate.
A flaw was found in Renovate. This Important vulnerability in Renovate allows for arbitrary command execution on the system running Renovate.
Exploitation requires an attacker to possess repository write access and introduce a specially crafted `gleam.toml` file. While requiring local access and specific repository control, successful exploitation can lead to high impact on system confidentiality, integrity, and availability.
The version of Renovate shipped by Red Hat is beyond the upstream fix (40.33.0), so Red Hat's products are not affected. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Weakness: CWE-78.
- < 39.53.0
- < 40.33.0
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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