CVE-2025-59835

LangBot has a cross-directory file upload vulnerability, which could lead to system takeover

CVSS 8.6 HIGHEPSS 0.4%CWE-23 CWE-434

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 8.6EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

02 out 2025Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

LangBot is a global IM bot platform designed for LLMs. In versions 4.1.0 up to but not including 4.3.5, authorized attackers can exploit the /api/v1/files/documents interface to perform arbitrary file uploads. Since this interface does not strictly restrict the storage directory of files on the server, it is possible to upload dangerous files to specific system directories. This is fixed in version 4.3.5.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

Produtos afetados

langbot-app · LangBot

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Referências

https://github.com/langbot-app/LangBot/pull/1691 https://github.com/langbot-app/LangBot/releases/tag/v4.3.5 https://github.com/langbot-app/LangBot/security/advisories/GHSA-7j3j-qj83-9qv4