CVE-2026-59098

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM 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 — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 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(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 14, 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 15× in last 7d / 78× 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.

Showing the most recent 100 of 144 total refreshes for this CVE.

  1. 2026-08-27 22:13 UTCEG score recompute
  2. 2026-08-27 22:13 UTCGHSA enrichment
  3. 2026-08-27 14:25 UTCEPSS rescore
  4. 2026-08-26 14:46 UTCEPSS rescore
  5. 2026-08-25 13:49 UTCEPSS rescore
  6. 2026-08-25 13:40 UTCEG score recompute
  7. 2026-08-25 13:40 UTCGHSA enrichment
  8. 2026-08-24 10:15 UTCEG score recompute
  9. 2026-08-24 10:15 UTCGHSA enrichment
  10. 2026-08-23 08:17 UTCEG score recompute
  11. 2026-08-23 08:17 UTCGHSA enrichment
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-22 06:48 UTCEG score recompute
  14. 2026-08-22 06:48 UTCGHSA enrichment
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 05:24 UTCEG score recompute
  17. 2026-08-21 05:24 UTCGHSA enrichment
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 04:00 UTCEG score recompute
  20. 2026-08-20 04:00 UTCGHSA enrichment
  21. 2026-08-19 17:04 UTCEPSS rescore
  22. 2026-08-19 01:19 UTCEG score recompute
  23. 2026-08-19 01:19 UTCGHSA enrichment
  24. 2026-08-18 13:48 UTCEPSS rescore
  25. 2026-08-17 23:52 UTCEG score recompute
Show 75 more
  1. 2026-08-17 23:52 UTCGHSA enrichment
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-16 22:28 UTCEG score recompute
  4. 2026-08-16 22:28 UTCGHSA enrichment
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 02:14 UTCEPSS rescore
  7. 2026-08-15 21:04 UTCEG score recompute
  8. 2026-08-15 21:04 UTCGHSA enrichment
  9. 2026-08-15 01:30 UTCEPSS rescore
  10. 2026-08-14 19:39 UTCEG score recompute
  11. 2026-08-14 19:39 UTCGHSA enrichment
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 18:15 UTCGHSA enrichment
  14. 2026-08-12 16:51 UTCEG score recompute
  15. 2026-08-12 16:51 UTCGHSA enrichment
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-11 15:27 UTCEG score recompute
  18. 2026-08-11 15:27 UTCGHSA enrichment
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-10 14:03 UTCEG score recompute
  21. 2026-08-10 14:03 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 12:39 UTCEG score recompute
  24. 2026-08-09 12:39 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 11:15 UTCEG score recompute
  27. 2026-08-08 11:15 UTCGHSA enrichment
  28. 2026-08-07 09:50 UTCEG score recompute
  29. 2026-08-07 09:50 UTCGHSA enrichment
  30. 2026-08-06 13:47 UTCEPSS rescore
  31. 2026-08-06 08:26 UTCEG score recompute
  32. 2026-08-06 08:26 UTCGHSA enrichment
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-05 07:02 UTCEG score recompute
  35. 2026-08-05 07:02 UTCGHSA enrichment
  36. 2026-08-04 15:10 UTCEPSS rescore
  37. 2026-08-04 10:39 UTCEPSS rescore
  38. 2026-08-04 03:41 UTCEG score recompute
  39. 2026-08-04 03:41 UTCGHSA enrichment
  40. 2026-08-03 10:36 UTCEPSS rescore
  41. 2026-08-03 02:17 UTCEG score recompute
  42. 2026-08-03 02:17 UTCGHSA enrichment
  43. 2026-08-02 02:27 UTCEPSS rescore
  44. 2026-08-02 00:52 UTCEG score recompute
  45. 2026-08-02 00:52 UTCGHSA enrichment
  46. 2026-08-01 04:16 UTCEPSS rescore
  47. 2026-07-31 23:28 UTCGHSA enrichment
  48. 2026-07-30 22:01 UTCEG score recompute
  49. 2026-07-30 22:01 UTCGHSA enrichment
  50. 2026-07-30 16:28 UTCEPSS rescore
  51. 2026-07-30 01:30 UTCEPSS rescore
  52. 2026-07-30 01:30 UTCEPSS rescore
  53. 2026-07-29 19:09 UTCGHSA enrichment
  54. 2026-07-28 17:29 UTCEG score recompute
  55. 2026-07-28 17:29 UTCGHSA enrichment
  56. 2026-07-28 15:37 UTCEPSS rescore
  57. 2026-07-27 15:52 UTCEG score recompute
  58. 2026-07-27 15:52 UTCGHSA enrichment
  59. 2026-07-27 14:14 UTCEPSS rescore
  60. 2026-07-26 14:54 UTCEPSS rescore
  61. 2026-07-26 14:54 UTCEPSS rescore
  62. 2026-07-26 13:01 UTCEG score recompute
  63. 2026-07-26 13:00 UTCGHSA enrichment
  64. 2026-07-25 14:18 UTCEPSS rescore
  65. 2026-07-25 14:18 UTCEPSS rescore
  66. 2026-07-24 14:18 UTCEPSS rescore
  67. 2026-07-24 14:18 UTCEPSS rescore
  68. 2026-07-23 14:18 UTCEPSS rescore
  69. 2026-07-23 14:18 UTCEPSS rescore
  70. 2026-07-23 03:21 UTCEG score recompute
  71. 2026-07-22 14:08 UTCEPSS rescore
  72. 2026-07-22 14:08 UTCEPSS rescore
  73. 2026-07-21 15:25 UTCEPSS rescore
  74. 2026-07-21 15:25 UTCEPSS rescore
  75. 2026-07-20 17:08 UTCEPSS rescore

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 14, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 65.6% of all scored CVEs.
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.

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