# CVE-2026-115333: Lotus improper authentication in event ingestion middleware

Source: https://junglewise.ai/threats/cve-2026-115333-lotus-through-0-10-2-contains-an-improper-authentication  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-22. Updated: 2026-10-22  
License: CC BY 4.0 with a link back

CVE-2026-115333 · Severity: medium · CVSS 5.9 · Published 2026-10-22

Lotus is an open-source pricing and billing infrastructure platform. A flaw in its API key validation allows attackers who know or guess an API key prefix to submit fake usage events and manipulate billing records for other organizations, potentially altering charges and causing financial impact or service disruption.

Technologies: [Uselotus Lotus](https://junglewise.ai/threats/technologies/lotus). Vendors: [Uselotus](https://junglewise.ai/threats/vendors/uselotus).

## Quick answers

**Is CVE-2026-115333 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-115333 being exploited in the wild.

**How severe is CVE-2026-115333?** Medium severity, with a CVSS score of 5.9, published 22 October 2026.

**Which products and versions are affected?** Uselotus Lotus through 0.10.2.

**Is there a fix for CVE-2026-115333?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-115333 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-115333?** Check whether you run Uselotus Lotus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The Go event ingestion middleware validates API keys by comparing only the prefix (the portion before the first dot) against the database, without verifying the full secret against the stored hashed_key. An attacker obtaining or inferring an API key prefix can submit POST requests to /api/track/ that the middleware accepts as legitimate, allowing arbitrary usage data submission for any organization whose prefix is known. The vulnerability exists in versions through 0.10.2.

## Affected products

- uselotus Lotus through 0.10.2

## Timeline

- 2026-10-22: disclosed

## References

- [https://github.com/uselotus/lotus](https://github.com/uselotus/lotus)
- [https://github.com/uselotus/lotus/blob/0.10.2/go/event-ingestion/authn/authn.go](https://github.com/uselotus/lotus/blob/0.10.2/go/event-ingestion/authn/authn.go)

## Related threats

- [Lotus SQL injection in subscription filter key validation](https://junglewise.ai/threats/cve-2026-115332-lotus-through-0-10-2-contains-an-sql-injection-vulnerability)
- [Lotus SQL injection in custom metric queries](https://junglewise.ai/threats/cve-2026-115330-lotus-through-0-10-2-contains-an-sql-injection-vulnerability)