CVE-2026-13524

MEDIUMPre-NVD 5.65.6—
EchelonGraph scoreMEDIUM confidence

Score 5.6 from GitHub Security Advisory (severity: LOW) published 2026-06-29. a secondary CVSS source baseline 5.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.6Exploit: None knownExposed: 0

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

A security vulnerability has been detected in CherryHQ cherry-studio up to 1.9.6. This vulnerability affects unknown code of the file src/main/services/mcp/oauth/callback.ts of the component MCP OAuth Local Callback Server. The manipulation of the argument code leads to improper authorization. The attack can be initiated remotely. The attack is considered to have high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.

CVSS v3
5.6
EG Score
5.6(medium)
EG Risk
30(Track)
EG Risk 30/100SSVC: 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
Severity56% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 2026

Advisory Details (3)

Auto-updated Jun 29, 2026
No patch confirmed yet. Sources: github_pr.
github_pr

fix: validate MCP OAuth callback state

Upstream fix in progress (PR #15388 · CherryHQ/cherry-studio, state=open)

https://github.com/CherryHQ/cherry-studio/pull/15388
generic

[Bug]: MCP OAuth callback accepts first code without state validation · Issue #15372 · CherryHQ/cherry-studio · GitHub

https://github.com/CherryHQ/cherry-studio/issues/15372
generic

GitHub - CherryHQ/cherry-studio: AI productivity studio with smart chat, autonomous agents, and 300+ assistants. Unified access to frontier LLMs · GitHub

https://github.com/CherryHQ/cherry-studio/

Vendor Advisories for CVE-2026-13524(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 41× 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 159 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-13524?
CVE-2026-13524 is a medium vulnerability published on June 29, 2026. A security vulnerability has been detected in CherryHQ cherry-studio up to 1.9.6. This vulnerability affects unknown code of the file src/main/services/mcp/oauth/callback.ts of the component MCP OAuth Local Callback Server. The manipulation of the argument code leads to improper authorization. The…
When was CVE-2026-13524 disclosed?
CVE-2026-13524 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13524 actively exploited?
CVE-2026-13524 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 63.7% of all scored CVEs.
What is the CVSS score of CVE-2026-13524?
CVE-2026-13524 has a CVSS v3 base score of 5.6 (NVD).
How do I remediate CVE-2026-13524?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13524, 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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