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TI-2026-81369 Aliases CVE-2026-117509GHSA-pp2v-mwxg-7p57

Path traversal in crownpku Rasa_NLU_Chi model persistor

Priority MEDIUM 57CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

crownpku Rasa_NLU_Chi up to and including 0.12.2 is affected. The Persistor._decompress function in rasa_nlu/persistor.py allows path traversal, so file paths can escape the intended directory (CWE-22). A remote attacker with low privileges can exploit it, with low impact on confidentiality, integrity and availability. A public exploit is available, and the project has not responded to an early issue report.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A vulnerability was detected in crownpku Rasa_NLU_Chi up to 0.12.2. Affected is the function Persistor._decompress of the file rasa_nlu/persistor.py of the component Model Persistor. The manipulation results in path traversal. The attack may be launched remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00407 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
crownpkuRasa_NLU_Chi0.12.0; 0.12.1; 0.12.2—No fix listedCNA
  • Rasa_NLU_Chi Vendorcrownpku Affected 0.12.0; 0.12.1; 0.12.2 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:crownpku:rasa_nlu_chi:*:*:*:*:*:*:*:*——crownpku
  • cpe:2.3:a:crownpku:rasa_nlu_chi:*:*:*:*:*:*:*:* Versions — — ·crownpku

Remediation

The sources list no fixed version for Rasa_NLU_Chi.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-117509
  2. 2026-10-27 Alias added: GHSA-pp2v-mwxg-7p57
  3. 2026-10-28 CISA SSVC decision points changed
  4. 2026-10-28 Priority changed: LOW → MEDIUM

References

Exploit 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences