Security readout for executives and security teams
Plain-English summary
A billing calculation flaw in New API can turn oversized, user-controlled usage values into negative charges. Instead of reducing an account balance, the system may add credit, enabling fraudulent consumption and potentially exhausting upstream provider funds. QuantumNous fixed the issue in version 1.0.0-rc.18.
Executive priority
Treat this as an immediate financial-integrity issue. Prioritize upgrading exposed billing gateways, then review historical transactions and upstream provider spending. Escalate any unexplained credits or consumption spikes because the vulnerability may directly convert application access into monetary loss and service disruption.
Technical view
Before 1.0.0-rc.18, integer conversion overflows in common/quota_math.go and related settlement paths can corrupt charges for image, video, token, audio, and billing-expression quantities. An account with positive balance or an active subscription may receive credit from a negative charge, compromising billing integrity and potentially service availability.
Likely exposure
Internet-accessible New API deployments below 1.0.0-rc.18 are potentially exposed where users can submit affected quantity fields and trigger settlement. Practical abuse appears to require a usable account with positive balance or an active subscription, despite the supplied CVSS vector recording no privileges required.
Exploitation context
The supplied record is not in CISA KEV, and the cited sources provide no evidence of active exploitation. Exploitation is nevertheless plausible because affected quantities are user-controlled, attack complexity is rated low, and successful abuse could create credit or consume upstream funds.
Researcher notes
The affected surface spans multiple quantity conversions and settlement paths, not one endpoint. Review both referenced commits and regression coverage for overflow-safe conversions, sign handling, boundary validation, and billing expressions. The public evidence establishes impact and a fixed release but does not establish exploitation in the wild.
Mitigation direction
- Upgrade QuantumNous New API to version 1.0.0-rc.18 or later.
- Until upgraded, strictly cap affected quantity fields to documented safe ranges.
- Restrict account creation and subscription activation where operationally feasible.
- Monitor and suspend accounts showing negative charges or unexplained balance increases.
Validation and detection
- Inventory deployed New API versions and identify every instance below 1.0.0-rc.18.
- Confirm all production instances run the fixed release or later.
- Review billing records for negative charges, unexpected credits, and abnormal upstream consumption.
- Verify affected quantity fields reject values outside approved operational ranges.
- Confirm settlement calculations cannot increase balances when recording billable usage.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-190: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-682: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-71479 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H3.95.2GitHub_MVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/QuantumNous/new-api/security/advisories/GHSA-8r8v-xf7q-rcprCVE reference, GitHub_M · x_refsource_CONFIRM
- https://github.com/QuantumNous/new-api/commit/c9943d37ad93477dd937fc4901cc3c4e0fd8aaabCVE reference, GitHub_M · x_refsource_MISC
- https://github.com/QuantumNous/new-api/commit/d0bd8aac742d1e160a5ca61743fe35f4fff880e8CVE reference, GitHub_M · x_refsource_MISC
- https://github.com/QuantumNous/new-api/releases/tag/v1.0.0-rc.18CVE reference, GitHub_M · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.