CVE-2026-33744 json
BentoML has Dockerfile Command Injection via system_packages in bentofile.yaml
published 7mo ago modified last mo. also EUVD-2026-16513 , GHSA-jfjg-vc52-wqvf , PYSEC-2026-157
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Prior to 1.4.37, the `docker.system_packages` field in `bentofile.yaml` accepts arbitrary strings that are interpolated directly into Dockerfile `RUN` commands without sanitization. Since `system_packages` is semantically a list of OS package names (data), users do not expect values to be interpreted as shell commands. A malicious `bentofile.yaml` achieves arbitrary command execution during `bentoml containerize` / `docker build`. Version 1.4.37 fixes the issue.
Patch / fix
- pypi bentoml 1.4.37
- bentoml bentoml 1.4.37
Is CVE-2026-33744 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 7mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/bentoml/BentoML/security/advisories/GHSA-jfjg-vc52-wqvf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | bentoml | <1.4.37 |
1.4.37 |
Affected products
- bentoml BentoML
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
github.com
/bentoml/BentoML/security/advisories/GHSA-jfjg-vc52-wqvf
web, exploit, mitigation, vendor-advisory, evidence
-
nvd.nist.gov
/vuln/detail/CVE-2026-33744
advisory
-
github.com
/bentoml/BentoML
package
-
github.com
/pypa/advisory-database/tree/main/vulns/bentoml/PYSEC-2026-157.yaml
web
Sources
- CVE List CVE-2026-33744
- GitHub Advisory GHSA-jfjg-vc52-wqvf
- NVD CVE-2026-33744
- OSV PYSEC-2026-157
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.