CVE-2026-35486: text-generation-webui has a SSRF in superbooga/superboogav2 extensions — no URL validation

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-07 · updated 2026-10-26
Weakness: CWE-918

Description

text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, he superbooga and superboogav2 RAG extensions fetch user-supplied URLs via requests.get() with zero validation — no scheme check, no IP filtering, no hostname allowlist. An attacker can access cloud metadata endpoints, steal IAM credentials, and probe internal services. The fetched content is exfiltrated through the RAG pipeline. This vulnerability is fixed in 4.3.

Affected products

oobabooga text-generation-webui: before 4.3 — fixed in 4.3

How to fix

Upgrade to a fixed version: oobabooga text-generation-webui 4.3. Check the vendor advisory for mitigations.

References

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