CVE-2026-7847A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3.
Updated under an hour ago ()
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A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function _get_file_id of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently random values. Access to the local network is required for this attack. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
- CVSS
- 2.6 LOW (v3.1, NVD)CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-310, CWE-330
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Jul 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-3-Predictable-File-ID.md
- https://github.com/chatchat-space/Langchain-Chatchat/
- https://github.com/chatchat-space/Langchain-Chatchat/issues/5464
- https://vuldb.com/submit/807796
- https://vuldb.com/vuln/361126
- https://vuldb.com/vuln/361126/cti
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.