CVE-2026-59098

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Elevated
6.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

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
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

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 (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

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.
Web page

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 pull request

🔒 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
Web page

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 10× in last 7d / 35× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 195 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 95 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:36 UTCEG score recompute
  2. 2026-10-11 16:51 UTCEG score recompute
  3. 2026-10-11 14:14 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  21. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-09-23 06:37 UTCEG score recompute
  23. 2026-09-23 06:37 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-09-18 06:14 UTCEG score recompute
Show 75 more
  1. 2026-09-18 06:14 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  2. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  5. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-09-13 16:56 UTCEG score recompute
  7. 2026-09-13 16:56 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-09-12 14:14 UTCEG score recompute
  10. 2026-09-12 14:14 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  11. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-09-05 23:51 UTCEG score recompute
  17. 2026-09-05 23:51 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  18. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-08-30 11:21 UTCEG score recompute
  24. 2026-08-30 11:21 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  26. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  27. 2026-08-27 22:13 UTCEG score recompute
  28. 2026-08-27 22:13 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  29. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  30. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  32. 2026-08-25 13:40 UTCEG score recompute
  33. 2026-08-25 13:40 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  34. 2026-08-24 10:15 UTCEG score recompute
  35. 2026-08-24 10:15 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  36. 2026-08-23 08:17 UTCEG score recompute
  37. 2026-08-23 08:17 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  38. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  39. 2026-08-22 06:48 UTCEG score recompute
  40. 2026-08-22 06:48 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  41. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  42. 2026-08-21 05:24 UTCEG score recompute
  43. 2026-08-21 05:24 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  44. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  45. 2026-08-20 04:00 UTCEG score recompute
  46. 2026-08-20 04:00 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  47. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  48. 2026-08-19 01:19 UTCEG score recompute
  49. 2026-08-19 01:19 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  50. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  51. 2026-08-17 23:52 UTCEG score recompute
  52. 2026-08-17 23:52 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  53. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  54. 2026-08-16 22:28 UTCEG score recompute
  55. 2026-08-16 22:28 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  56. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  57. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  58. 2026-08-15 21:04 UTCEG score recompute
  59. 2026-08-15 21:04 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  60. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  61. 2026-08-14 19:39 UTCEG score recompute
  62. 2026-08-14 19:39 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  63. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  64. 2026-08-13 18:15 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  65. 2026-08-12 16:51 UTCEG score recompute
  66. 2026-08-12 16:51 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  67. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  68. 2026-08-11 15:27 UTCEG score recompute
  69. 2026-08-11 15:27 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  70. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  71. 2026-08-10 14:03 UTCEG score recompute
  72. 2026-08-10 14:03 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5
  73. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  74. 2026-08-09 12:39 UTCEG score recompute
  75. 2026-08-09 12:39 UTCGHSA enrichmentGHSA-w676-mrp6-5fqq · GitHub severity HIGH · GitHub CVSS 6.5

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59098?
CVE-2026-59098 is a medium-severity vulnerability; its CVE record was 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 made public?
CVE-2026-59098 was made public on June 30, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 2, 2026. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-59098 actively exploited?
CVE-2026-59098 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59098?
CVE-2026-59098 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59098?
An upstream fix for CVE-2026-59098 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-59098 are linked in the Vendor Advisories panel on this page.

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