# CVE-2026-120833: labbench before 0.46.1 Deserialization of Untrusted Data via read() Pickle Auto-Dispatch

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

labbench before 0.46.1 contains a deserialization of untrusted data vulnerability in read() and read_relational() that passes any file with a .p or .pickle extension to pandas.read_pickle based on the extension alone. Attackers who supply a crafted data file or relational data archive can execute arbitrary code when a user loads it with these functions.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/usnistgov/labbench/pull/32
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/usnistgov/labbench/commit/ac9b9b18cba67cb8e85eb563b6bb7dc1092b4c54

## Affected products and versions

- NIST / labbench (labbench): ≥ 0; < 0.46.1 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.5 (high); CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-502

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/usnistgov/labbench/pull/32 (CNA: VulnCheck; patch, issue-tracking)

- https://github.com/usnistgov/labbench/commit/ac9b9b18cba67cb8e85eb563b6bb7dc1092b4c54 (CNA: VulnCheck; patch)

- https://github.com/usnistgov/labbench/blob/0.46.0/src/labbench/_data.py#L1664-L1666 (CNA: VulnCheck; technical-description)

- https://github.com/usnistgov/labbench/blob/0.46.1/ChangeLog.md (CNA: VulnCheck; release-notes)

- https://pypi.org/project/labbench/0.46.1/ (CNA: VulnCheck; product)

- https://github.com/usnistgov/labbench (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/labbench-before-0.46.1-deserialization-of-untrusted-data-via-read-pickle-auto-dispatch (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-120833; retrieved 2026-11-03; source updated 2026-11-03

Revision: aca12bba2c7b187b557466fd7ca73eb157039cb042a870b473264cb50ffd56b5

Canonical: https://y2.dev/cve/CVE-2026-120833

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