CVE-2026-68929

CRITICALPre-NVD 9.39.3
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (36th 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
9.3EG
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: 0.4%CVSS: 9.3Exploit: No code on recordExposed services: Not assessed

The CVE record names the fixed release — apply it.

FastGPT is an open-source LLM platform for building AI applications on a knowledge base. In versions prior to 4.15.2, the WeChat (iLink) share-channel endpoints authorize requests using only the public shareId, with no authenticated identity or team-ownership check. As a result, an unauthenticated attacker who knows a victim team's shareId can take that team's WeChat bot offline or hijack the channel to their own bot: the logout endpoint is gated only by an existence check yet wipes the outLink's stored WeChat token, and the QR-code status endpoint performs no authorization at all and writes attacker-supplied bot credentials into the outLink identified by shareId. By generating a QR for a victim shareId, scanning it with their own WeChat, and calling the status endpoint, an attacker binds the victim team's app to the attacker's bot, exposing the app's private responses, displacing the legitimate binding, and consuming the victim's resources. The shareId is exposed in every shared chat URL, iframe, and embed, so it is not a secret. This issue is fixed in version 4.15.2.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
73
EG Risk 73/100

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)
Severity93% × 45%
The EG Score, 9.3 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, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

The CVE record names the fixed release. 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 total (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)3 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 total (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

August 27, 2026

Last Modified

September 9, 2026

Advisory Details (2)

Auto-updated Oct 3, 2026
Fix named in the CVE record. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Missing authorization on WeChat (iLink) outLink endpoints: unauthenticated cross-tenant bot-token wipe (DoS) and channel hijack keyed only by the public shareId · Advisory · labring/FastGPT · GitHub

https://github.com/labring/FastGPT/security/advisories/GHSA-q4pr-3qpg-9q5v
GitHub commit

commit 81d391995b1f (labring/FastGPT)

Fix landed in labring/FastGPT commit 81d391995b1f — awaiting tagged release

https://github.com/labring/FastGPT/commit/81d391995b1f9989455267448872ff88bb1f42c9

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 55× 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.

  1. 2026-10-14 01:46 UTCEG score recompute
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-10-12 21:58 UTCEG score recompute
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  5. 2026-10-12 15:44 UTCEG score recompute
  6. 2026-10-11 19:29 UTCEG score recompute
  7. 2026-10-11 16:45 UTCEG score recompute
  8. 2026-10-11 14:06 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-10 01:45 UTCEG score recompute
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-10-09 02:55 UTCEG score recompute
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-08 01:13 UTCEG score recompute
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  17. 2026-10-06 15:56 UTCEG score recompute
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-10-05 20:37 UTCEG score recompute
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  21. 2026-10-05 01:23 UTCEG score recompute
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  23. 2026-10-03 14:57 UTCEG score recompute
  24. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-10-02 21:37 UTCEG score recompute
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  1. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-10-01 19:52 UTCEG score recompute
  3. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-09-30 19:53 UTCEG score recompute
  5. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-09-30 04:53 UTCEG score recompute
  7. 2026-09-29 01:19 UTCEG score recompute
  8. 2026-09-28 16:24 UTCEG score recompute
  9. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-09-27 17:23 UTCEG score recompute
  11. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-09-26 18:23 UTCEG score recompute
  13. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-09-24 15:38 UTCEG score recompute
  15. 2026-09-23 20:46 UTCEG score recompute
  16. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  17. 2026-09-22 18:22 UTCEG score recompute
  18. 2026-09-21 22:44 UTCEG score recompute
  19. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  20. 2026-09-20 23:57 UTCEG score recompute
  21. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  22. 2026-09-19 16:29 UTCEG score recompute
  23. 2026-09-18 21:29 UTCEG score recompute
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  25. 2026-09-17 20:54 UTCEG score recompute
  26. 2026-09-16 19:03 UTCEG score recompute
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  28. 2026-09-16 06:17 UTCEG score recompute
  29. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  30. 2026-09-15 03:24 UTCEG score recompute
  31. 2026-09-13 16:53 UTCEG score recompute
  32. 2026-09-12 18:13 UTCEG score recompute
  33. 2026-09-11 15:44 UTCEG score recompute
  34. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  35. 2026-09-11 11:51 UTCEG score recompute
  36. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  37. 2026-09-10 12:18 UTCEG score recompute
  38. 2026-09-09 00:37 UTCEG score recompute
  39. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  40. 2026-09-07 19:37 UTCEG score recompute
  41. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  42. 2026-09-06 17:08 UTCEG score recompute
  43. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  44. 2026-09-05 18:24 UTCEG score recompute
  45. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  46. 2026-09-04 15:03 UTCEG score recompute
  47. 2026-09-04 07:28 UTCEG score recompute
  48. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  49. 2026-09-02 15:01 UTCEG score recompute
  50. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  51. 2026-09-01 16:11 UTCEG score recompute
  52. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  53. 2026-09-01 08:19 UTCEG score recompute
  54. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  55. 2026-08-30 21:56 UTCEG score recompute
  56. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  57. 2026-08-30 03:02 UTCEG score recompute
  58. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  59. 2026-08-29 00:27 UTCEG score recompute
  60. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  61. 2026-08-28 20:40 UTCEG score recompute
  62. 2026-08-28 19:46 UTCEG score recompute
  63. 2026-08-28 00:31 UTCEG score recompute
  64. 2026-08-27 23:24 UTCEG score recomputeFirst assessed: 9.3 CRITICAL
  65. 2026-08-27 23:23 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68929?
CVE-2026-68929 is a critical-severity vulnerability; its CVE record was published on August 27, 2026. FastGPT is an open-source LLM platform for building AI applications on a knowledge base. In versions prior to 4.15.2, the WeChat (iLink) share-channel endpoints authorize requests using only the public shareId, with no authenticated identity or team-ownership check. As a result, an unauthenticated…
When was the CVE record for CVE-2026-68929 published?
The CVE record for CVE-2026-68929 was published on August 27, 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 September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-68929 actively exploited?
CVE-2026-68929 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-68929?
CVE-2026-68929 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-68929?
The CVE record for CVE-2026-68929 names the fix: "This issue is fixed in version 4.15.2."

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