gcdRadar
archive/Patch now/AIR-2026-0442
closedclosed 1 Feb 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-23835: LobeHub improper authorization in presigned upload

LobeHub, LobeChat

LobeHub lacks proper validation on file upload requests within its knowledge base feature, allowing users to write files to unintended paths. Attackers can also manipulate request parameters to misrepresent file usage and size quotas.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
5.7
EPSS
<0.01 · top 70% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
1 Feb 2026
last update
1 Feb 2026
CVE ids
CVE-2026-23835other records

Timeline · 1

  1. 1 Feb 2026CVE-2026-23835: LobeHub Vulnerable to Improper Authorization in Presigned Upload

Sources · 1

Advisories and databases

  1. 2026-02-01
    CVE-2026-23835: LobeHub Vulnerable to Improper Authorization in Presigned Upload
    GitHub Advisory Database · github.com/advisories/GHSA-wrrr-8jcv-wjf5

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
authorization
dates
happened 1 Feb 2026 · first reported 1 Feb 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.90 · created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-23835: LobeHub improper authorization in presigned upload

https://gcdradar.vercel.app/incidents/cve-2026-23835-lobehub-improper-authorization-in-presigned-u · AIR-2026-0442 · closed 2026-02-01

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-02-01
- AI role: Attack on AI
- Products: LobeHub, LobeChat
- CVE ids: CVE-2026-23835
- CVSS: 5.7

## Summary

LobeHub lacks proper validation on file upload requests within its knowledge base feature, allowing users to write files to unintended paths. Attackers can also manipulate request parameters to misrepresent file usage and size quotas.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-02-01: CVE-2026-23835: LobeHub Vulnerable to Improper Authorization in Presigned Upload (https://github.com/advisories/GHSA-wrrr-8jcv-wjf5)

## Sources

- 2026-02-01 GitHub Advisory Database: CVE-2026-23835: LobeHub Vulnerable to Improper Authorization in Presigned Upload https://github.com/advisories/GHSA-wrrr-8jcv-wjf5

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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