CVE-2026-59098: Lobehub · LobeChat through 2.2.9 contains a broken access control vulnerability in the retrieval-augmented-generation semantic search functionality that
Affects lobehubSource GCVE Database
Not known to be exploited · CVSS 6.5 Medium.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 2 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHublobehub/lobehubpkg:github/lobehub/lobehubOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is released, restrict access to the affected semantic search functionality to trusted users only and monitor for suspicious activity involving knowledge-base or file identifier parameters.
Description
LobeChat through 2.2.9 contains a broken access control vulnerability in the retrieval-augmented-generation semantic search functionality that allows authenticated attackers to access other users' data by exploiting missing user-identifier predicates in the chunk model semanticSearch method. Attackers can supply arbitrary victim file or knowledge-base identifiers through the chunk retrieval and chat knowledge-base paths to retrieve text content, file names, and metadata belonging to other users.
References
- nvd.nist.gov/vuln/detail/CVE-2026-59098 (opens in a new tab)
- github.com/lobehub/lobehub/issues/16535 (opens in a new tab)
- github.com/lobehub/lobehub/pull/16594 (opens in a new tab)
- github.com/lobehub/lobehub/commit/4a7931a4e66832947dba11afdffae2918a56b6a0 (opens in a new tab)
- vulncheck.com/advisories/lobechat-cross-user-document-disclosure-via-unscoped-rag-semantic-search (opens in a new tab)