CVE-2026-59100

MEDIUMPre-NVD 5.05.0—
EchelonGraph scoreMEDIUM confidence

Score 5.0 from GitHub Security Advisory (severity: LOW) published 2026-07-02. a secondary CVSS source baseline 5.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.0Exploit: 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 object level authorization vulnerability that allows authenticated attackers to access and modify other users' chat-group agent data by supplying arbitrary group identifiers. Attackers can invoke the getGroupAgents, updateAgentInGroup, and removeAgentsFromGroup operations without user-scoped predicates to read agent listings, modify agent roles and ordering, and remove agents from chat groups belonging to other users.

CVSS v3
5.0
EG Score
5.0(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity50% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated Jul 9, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

LobeHub 2.2.9 - Broken Object Level Authorization via Chat-Group Agent Operations | Advisories | VulnCheck

https://www.vulncheck.com/advisories/lobechat-broken-object-level-authorization-via-chat-group-agent-operations
github_pr

🐛 fix(database): scope group-agent removal by ownership (IDOR)

Fix merged in lobehub/lobehub PR #16586 on 2026-07-01 — awaiting tagged release

https://github.com/lobehub/lobehub/pull/16586
generic

Cross-user read and modification of chat-group agents via unscoped junction-table queries (IDOR) · Issue #16537 · lobehub/lobehub · GitHub

https://github.com/lobehub/lobehub/issues/16537
github_commit

commit 9ed5a7e20d8a (lobehub/lobehub)

Fix landed in lobehub/lobehub commit 9ed5a7e20d8a — awaiting tagged release

https://github.com/lobehub/lobehub/commit/9ed5a7e20d8a67c431265f5a252e9559d9920907

Vendor Advisories for CVE-2026-59100(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 14× 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 143 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 03:40 UTCEG score recompute
  7. 2026-08-25 03:40 UTCGHSA enrichment
  8. 2026-08-24 04:32 UTCGHSA enrichment
  9. 2026-08-23 05:24 UTCEG score recompute
  10. 2026-08-23 05:24 UTCGHSA enrichment
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-22 06:05 UTCEG score recompute
  13. 2026-08-22 06:05 UTCGHSA enrichment
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 04:26 UTCGHSA enrichment
  16. 2026-08-20 04:00 UTCEG score recompute
  17. 2026-08-20 04:00 UTCGHSA enrichment
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-18 22:30 UTCEG score recompute
  20. 2026-08-18 22:30 UTCGHSA enrichment
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-17 22:50 UTCEG score recompute
  23. 2026-08-17 22:50 UTCGHSA enrichment
  24. 2026-08-17 13:47 UTCEPSS rescore
  25. 2026-08-16 21:21 UTCEG score recompute
Show 75 more
  1. 2026-08-16 21:21 UTCGHSA enrichment
  2. 2026-08-16 14:56 UTCEPSS rescore
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 22:13 UTCEG score recompute
  5. 2026-08-15 22:13 UTCGHSA enrichment
  6. 2026-08-15 01:30 UTCEPSS rescore
  7. 2026-08-14 23:05 UTCGHSA enrichment
  8. 2026-08-13 23:57 UTCEG score recompute
  9. 2026-08-13 23:57 UTCGHSA enrichment
  10. 2026-08-13 22:00 UTCEPSS rescore
  11. 2026-08-13 00:48 UTCEG score recompute
  12. 2026-08-13 00:48 UTCGHSA enrichment
  13. 2026-08-12 13:51 UTCEPSS rescore
  14. 2026-08-12 01:41 UTCEG score recompute
  15. 2026-08-12 01:41 UTCGHSA enrichment
  16. 2026-08-11 02:33 UTCEG score recompute
  17. 2026-08-11 02:33 UTCGHSA enrichment
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-10 03:25 UTCEG score recompute
  20. 2026-08-10 03:25 UTCGHSA enrichment
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 04:18 UTCEG score recompute
  23. 2026-08-09 04:18 UTCGHSA enrichment
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-08 05:10 UTCEG score recompute
  26. 2026-08-08 05:10 UTCGHSA enrichment
  27. 2026-08-07 06:03 UTCEG score recompute
  28. 2026-08-07 06:02 UTCGHSA enrichment
  29. 2026-08-06 13:47 UTCEPSS rescore
  30. 2026-08-06 06:54 UTCEG score recompute
  31. 2026-08-06 06:54 UTCGHSA enrichment
  32. 2026-08-05 19:17 UTCEPSS rescore
  33. 2026-08-05 07:47 UTCEG score recompute
  34. 2026-08-05 07:46 UTCGHSA enrichment
  35. 2026-08-04 15:10 UTCEPSS rescore
  36. 2026-08-04 10:39 UTCEPSS rescore
  37. 2026-08-04 08:36 UTCEG score recompute
  38. 2026-08-04 08:36 UTCGHSA enrichment
  39. 2026-08-03 10:36 UTCEPSS rescore
  40. 2026-08-03 08:40 UTCGHSA enrichment
  41. 2026-08-02 09:27 UTCEG score recompute
  42. 2026-08-02 09:27 UTCGHSA enrichment
  43. 2026-08-02 02:27 UTCEPSS rescore
  44. 2026-08-01 10:20 UTCGHSA enrichment
  45. 2026-07-31 11:11 UTCEG score recompute
  46. 2026-07-31 11:11 UTCGHSA enrichment
  47. 2026-07-30 16:28 UTCEPSS rescore
  48. 2026-07-30 11:29 UTCEG score recompute
  49. 2026-07-30 11:29 UTCGHSA enrichment
  50. 2026-07-30 01:30 UTCEPSS rescore
  51. 2026-07-30 01:30 UTCEPSS rescore
  52. 2026-07-29 12:20 UTCEG score recompute
  53. 2026-07-29 12:20 UTCGHSA enrichment
  54. 2026-07-28 15:37 UTCEPSS rescore
  55. 2026-07-28 13:10 UTCEG score recompute
  56. 2026-07-28 13:10 UTCGHSA enrichment
  57. 2026-07-27 14:14 UTCEPSS rescore
  58. 2026-07-27 12:09 UTCEG score recompute
  59. 2026-07-27 12:09 UTCGHSA enrichment
  60. 2026-07-26 14:54 UTCEPSS rescore
  61. 2026-07-26 14:54 UTCEPSS rescore
  62. 2026-07-26 13:00 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

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Frequently asked(5)

What is CVE-2026-59100?
CVE-2026-59100 is a medium vulnerability published on July 2, 2026. LobeChat through 2.2.9 contains a broken object level authorization vulnerability that allows authenticated attackers to access and modify other users' chat-group agent data by supplying arbitrary group identifiers. Attackers can invoke the getGroupAgents, updateAgentInGroup, and…
When was CVE-2026-59100 disclosed?
CVE-2026-59100 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-2026-59100 actively exploited?
CVE-2026-59100 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 78.9% of all scored CVEs.
What is the CVSS score of CVE-2026-59100?
CVE-2026-59100 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2026-59100?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59100, 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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