CVE-2026-61684

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 0.5%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

FastGPT is a knowledge-based AI application platform. In 4.15.0-beta4, FastGPT plugin invoke reverse-call endpoints under /api/invoke/* authenticate only by verifying a JWT signed with INVOKE_TOKEN_SECRET, which defaults to the constant string token and was not set in official deployment templates. An unauthenticated attacker can self-sign an HS256 JWT and reach /api/invoke/userInfo to disclose cross-tenant user PII by attacker-supplied tmbId values, or /api/invoke/fileUpload to write attacker-controlled content into chat files. This issue is fixed in version 4.15.0-beta5.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
71
EG Risk 71/100

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)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 15, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 15, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

Unauthenticated cross-tenant data access via forgeable plugin-invoke JWT (default INVOKE_TOKEN_SECRET='token') · Advisory · labring/FastGPT · GitHub

https://github.com/labring/FastGPT/security/advisories/GHSA-w732-rq8c-chc8
GitHub release Patch Available

v4.15.0-beta5

Patch available: labring/FastGPT v4.15.0-beta5 (pre-release)

https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta5
GitHub pull request Patch Available

fix: require invoke token secret configuration

Patch available: labring/FastGPT v4.15.0-beta5 (PR #7170 merged 2026-06-23)

https://github.com/labring/FastGPT/pull/7170
GitHub commit Patch Available

commit f5f1e58b2557 (labring/FastGPT)

Patch available: labring/FastGPT v4.15.0-beta5 (contains commit f5f1e58b2557)

https://github.com/labring/FastGPT/commit/f5f1e58b25571b7107ca49d9bf96bb2b0e0a620a

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 31× 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 99 of 132 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 33 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-10-13 13:22 UTCEG score recompute
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-10-12 15:50 UTCEG score recompute
  5. 2026-10-11 19:34 UTCEG score recompute
  6. 2026-10-11 16:49 UTCEG score recompute
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  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-01 12:41 UTCEG score recompute
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-09-28 08:46 UTCEG score recompute
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-09-24 08:53 UTCEG score recompute
  25. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
Show 74 more
  1. 2026-09-23 03:19 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  3. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  4. 2026-09-18 04:46 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-09-13 23:13 UTCEG score recompute
  8. 2026-09-13 07:14 UTCEG score recompute
  9. 2026-09-11 21:46 UTCEG score recompute
  10. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-09-08 00:56 UTCEG score recompute
  14. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-09-05 20:51 UTCEG score recompute
  17. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-08-31 02:56 UTCEG score recompute
  22. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-08-30 03:53 UTCEG score recompute
  24. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  26. 2026-08-27 23:53 UTCEG score recompute
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  28. 2026-08-26 23:09 UTCEG score recompute
  29. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  30. 2026-08-25 23:55 UTCEG score recompute
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-08-24 14:36 UTCEG score recompute
  33. 2026-08-23 04:19 UTCEG score recompute
  34. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  35. 2026-08-22 06:40 UTCEG score recompute
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  37. 2026-08-21 09:00 UTCEG score recompute
  38. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-08-20 00:17 UTCEG score recompute
  40. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  41. 2026-08-18 20:00 UTCEG score recompute
  42. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  43. 2026-08-17 15:29 UTCEG score recompute
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  45. 2026-08-16 17:50 UTCEG score recompute
  46. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  47. 2026-08-16 06:38 UTCEG score recompute
  48. 2026-08-15 09:00 UTCEG score recompute
  49. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  50. 2026-08-14 00:32 UTCEG score recompute
  51. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-08-12 15:59 UTCEG score recompute
  53. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  54. 2026-08-11 18:20 UTCEG score recompute
  55. 2026-08-11 07:21 UTCEG score recompute
  56. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  57. 2026-08-09 22:53 UTCEG score recompute
  58. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  59. 2026-08-09 01:14 UTCEG score recompute
  60. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  61. 2026-08-07 16:46 UTCEG score recompute
  62. 2026-08-06 19:08 UTCEG score recompute
  63. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  64. 2026-08-05 21:30 UTCEG score recompute
  65. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  66. 2026-08-04 23:51 UTCEG score recompute
  67. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-04 13:02 UTCEG score recompute
  69. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  70. 2026-08-03 14:47 UTCEG score recompute
  71. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  72. 2026-08-02 06:20 UTCEG score recompute
  73. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  74. 2026-08-01 08:41 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-61684?
CVE-2026-61684 is a high-severity vulnerability; its CVE record was published on July 15, 2026. FastGPT is a knowledge-based AI application platform. In 4.15.0-beta4, FastGPT plugin invoke reverse-call endpoints under /api/invoke/* authenticate only by verifying a JWT signed with INVOKETOKENSECRET, which defaults to the constant string token and was not set in official deployment templates.…
When was the CVE record for CVE-2026-61684 published?
The CVE record for CVE-2026-61684 was published on July 15, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 15, 2026; the record at its source may have been updated since.
Is CVE-2026-61684 actively exploited?
CVE-2026-61684 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61684?
CVE-2026-61684 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-61684?
A fix for CVE-2026-61684 is available: update to the fixed version the vendor names in its advisory.

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