CVE-2026-57574

HIGHPre-NVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (43rd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a vulnerability in Time-based One-Time Password (TOTP) authentication in UserAuthService where insufficient validation of used tokens allows the reuse of a single-use code within its valid time step. If both credentials and a TOTP code are obtained concurrently, an attacker may reuse the code to perform unauthorized actions, potentially leading to account takeover. This issue is fixed in version 2026.6.0.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
34
EG Risk 34/100CISA SSVC

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
Severity74% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
44th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 10, 2026

Last Modified

July 13, 2026

Advisory Details (4)

Auto-updated Jul 10, 2026
Patch available. Sources: github_release, github, github_commit.
githubMentions a patch (unverified)

TOTP tokens can be reused · Advisory · misskey-dev/misskey · GitHub

https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m5x-5mp6-6vpq
github_release Patch Available

2026.6.0

Patch available: misskey-dev/misskey 2026.6.0

https://github.com/misskey-dev/misskey/releases/tag/2026.6.0
github_commit Patch Available

commit d323fe00d04a (misskey-dev/misskey)

Patch available: misskey-dev/misskey 2026.6.0 (contains commit d323fe00d04a)

https://github.com/misskey-dev/misskey/commit/d323fe00d04ac46ab0b4e66fce9169effaa8dfb7
github_commit Patch Available

commit 00c6210a591d (misskey-dev/misskey)

Patch available: misskey-dev/misskey 2026.6.0 (contains commit 00c6210a591d)

https://github.com/misskey-dev/misskey/commit/00c6210a591db2b0be438740d05b82070fa68ac6

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 136 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-57574?
CVE-2026-57574 is a high vulnerability published on July 10, 2026. Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a vulnerability in Time-based One-Time Password (TOTP) authentication in UserAuthService where insufficient validation of used tokens allows the reuse of a single-use code within its valid time step. If…
When was CVE-2026-57574 disclosed?
CVE-2026-57574 was first published on July 10, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57574 actively exploited?
CVE-2026-57574 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57574?
CVE-2026-57574 has a CVSS base score of 7.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-57574?
A fix for CVE-2026-57574 is available: update to the fixed version the vendor names in its advisory.

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