EUVD-2026-60263Published

New API: Redis user quota cache overwrite via PUT /api/user/self allows quota bypass

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cve-program · CVE-2026-64865

Published

New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. Prior to 1.0.0-rc.16, repeated PUT /api/user/self requests that update language or sidebar_modules can race relay billing because controller/user.go calls User.Update and updateUserCache performs a full RedisHSetObj write to user:.Quota, overwriting concurrent HINCRBY deductions and allowing an authenticated user to keep cached quota artificially high. This issue is fixed in version 1.0.0-rc.16.

Source published: 17 Aug 2026 16:13:37 UTC
Source modified: 18 Aug 2026 14:47:21 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 6.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

euvd · EUVD-2026-60263

Published

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datePublished: Aug 17, 2026, 4:13:37 PM

dateUpdated: Aug 18, 2026, 2:47:21 PM

Source published: Aug 17, 2026, 4:13:37 PM (timezone not stated)
Source modified: Aug 18, 2026, 2:47:21 PM (timezone not stated)
Saved here: 11 Nov 2026 15:07:45 UTC
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EUVD CVSS 4.0 · 6.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

nvd · CVE-2026-64865

Published

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Source analysis status: Deferred

Weakness classifications: CWE-362

Original publisher date fields

published: 2026-08-17T16:17:22.427

lastModified: 2026-09-18T20:09:01.757

Source published: 17 Aug 2026 16:17:22 UTC
Source modified: 18 Sep 2026 20:09:01 UTC
Saved here: 25 Oct 2026 15:18:45 UTC
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CVSS 4.0 · [email protected] · Secondary · 6.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv · GHSA-j6gc-4893-qwmp

Published

### Summary Authenticated users can repeatedly call PUT /api/user/self with language or sidebar_modules while relay requests are consuming quota. The settings path reads a full User snapshot and writes it back through User.Update(), which refreshes Redis with RedisHSetObj and overwrites the Quota field. This can erase concurrent HINCRBY quota deductions and keep cached balance artificially high, allowing calls far beyond the paid quota. ### Impact A low-privileged authenticated user may bypass quota enforcement and cause financial loss to operators. Authentication and pre-consumption use cached quota, while DB/log usage can continue increasing. ### Affected Components - controller/user.go: UpdateSelf language/sidebar_modules branches - model/user.go: User.Update / UpdateWithTx full snapshot update - model/user_cache.go: updateUserCache RedisHSetObj full hash write - model/user.go: GetUserQuota reads Redis cache first ### Root Cause Normal billing uses Redis HINCRBY on user:<id>.Quota, while settings updates use a stale full user snapshot to HSET the entire cache hash, including Quota. These two writers race on the same Redis field. ### Patches This issue is fixed in v1.0.0-rc.16. The fix makes user setting updates field-scoped, prevents stale user snapshots from overwriting accounting fields, and keeps generic user cache refreshes from modifying Quota. Quota cache updates are reserved for atomic quota delta paths or explicit quota synchronization paths. ### Workarounds If upgrading immediately is not possible, operators should temporarily restrict or rate-limit PUT /api/user/self and avoid allowing frequent user setting updates while Redis-backed quota cache is enabled. This is only a mitigation; upgrading is recommended. ### Remediation Upgrade to v1.0.0-rc.16 or later. Deployments with Redis enabled should restart application instances after upgrading so stale in-process code paths are removed.

Source published: 17 Aug 2026 16:36:19 UTC
Source modified: 18 Aug 2026 15:11:00 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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CVSS_V4 · CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

Publisher rating · MODERATE

osv · GO-2026-6243

Published

New API: Redis user quota cache overwrite via PUT /api/user/self allows quota bypass in github.com/QuantumNous/new-api

Source published: 18 Aug 2026 14:32:29 UTC
Source modified: 18 Aug 2026 15:00:26 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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