CVE-2026-59098

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-02. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.5(high)
EPSS
14.8%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 6, 2026

Advisory Details (4)

Auto-updated Jul 7, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

LobeHub 2.2.9 - Cross-User Document Disclosure via Unscoped RAG Semantic Search | Advisories | VulnCheck

https://www.vulncheck.com/advisories/lobechat-cross-user-document-disclosure-via-unscoped-rag-semantic-search
github_pr

🔒 fix(rag): scope knowledge-base file resolution to the caller

Fix merged in lobehub/lobehub PR #16594 on 2026-07-01 — awaiting tagged release

https://github.com/lobehub/lobehub/pull/16594
generic

Cross-user RAG document disclosure via unscoped semantic search (IDOR) · Issue #16535 · lobehub/lobehub · GitHub

https://github.com/lobehub/lobehub/issues/16535
github_commit

commit 4a7931a4e668 (lobehub/lobehub)

Fix landed in lobehub/lobehub commit 4a7931a4e668 — awaiting tagged release

https://github.com/lobehub/lobehub/commit/4a7931a4e66832947dba11afdffae2918a56b6a0

Vendor Advisories for CVE-2026-59098(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 19× in last 7d / 19× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 03:44 UTCEG score recompute
  2. 2026-07-07 03:43 UTCGHSA enrichment
  3. 2026-07-06 16:41 UTCMITRE cvelistV5CVSS v4 → 7.1 · severity → MEDIUM
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:19 UTCEG score recompute
  9. 2026-07-06 02:19 UTCGHSA enrichment
  10. 2026-07-05 02:31 UTCEPSS rescore
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 00:54 UTCEG score recompute
  13. 2026-07-05 00:54 UTCGHSA enrichment
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-03 23:30 UTCEG score recompute
  17. 2026-07-03 23:30 UTCGHSA enrichment
  18. 2026-07-02 22:06 UTCEG score recompute
  19. 2026-07-02 22:06 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59098?
CVE-2026-59098 is a medium vulnerability published on July 2, 2026. 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.…
When was CVE-2026-59098 disclosed?
CVE-2026-59098 was first published in the National Vulnerability Database on July 2, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59098 actively exploited?
CVE-2026-59098 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-59098?
CVE-2026-59098 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-59098?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59098, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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