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CVE-2026-115333 uselotus CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-22T10:57:49.499Z and has not been modified since then. Lotus through 0.10.2 contains an improper authentication vulnerability in the Go event ingestion middleware that validates API keys by prefix only, without checking the secret against the stored hashed_key. This vulnerability allows attackers who know or obtain an API key prefix to submit usage events to POST /api/track/ as that organization, altering its metered usage and billing. Defenders should prioritize verifying exposure and assessing potential impact on organizations using Lotus event ingestion API keys.

Vendor
uselotus
Product
lotus
CVSS
HIGH 8.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-22
Original CVE updated
2026-10-23
Advisory published
2026-10-22
Advisory updated
2026-10-23

Who should care

Defenders responsible for securing Lotus deployments, particularly those using event ingestion API keys, should assess potential exposure and verify authentication mechanisms. They should also review and update API key prefixes to ensure proper authentication and monitor for suspicious activity related to event ingestion. Additionally, defenders should perform vulnerability assessments and implement compensating controls where necessary.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact on organizations using Lotus event ingestion API keys due to the improper authentication vulnerability.

  • Defenders must verify exposure and assess potential impact on organizations using Lotus event ingestion API keys.
  • Authentication mechanisms for event ingestion may be bypassed, allowing unauthorized usage events to be submitted.

Technical summary

Lotus through 0.10.2 contains an improper authentication vulnerability in the Go event ingestion middleware that validates API keys by prefix only, without checking the secret against the stored hashed_key. This vulnerability allows attackers who know or obtain an API key prefix to submit usage events to POST /api/track/ as that organization, altering its metered usage and billing. The vulnerability can be exploited by submitting usage events with a valid API key prefix, without knowing the secret key. Defenders should prioritize verifying exposure and assessing potential impact on organizations using Lotus event ingestion API keys.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on organizations using Lotus event ingestion API keys.

Recommended defensive actions

  • Verify if Lotus event ingestion API keys are in use and assess potential exposure
  • Review and update API key prefixes to ensure proper authentication
  • Monitor for suspicious activity related to event ingestion
  • Perform vulnerability assessment
  • Implement compensating controls
  • Track exceptions and retest remediated assets
  • Review relevant monitoring, detection, and logs

Evidence notes

The CVE record and source item provide details on the improper authentication vulnerability in Lotus through 0.10.2. The vulnerability is caused by the Go event ingestion middleware validating API keys by prefix only, without checking the secret against the stored hashed_key. This allows attackers to submit usage events to POST /api/track/ as that organization, altering its metered usage and billing. Defenders should verify if Lotus event ingestion API keys are in use and assess potential exposure.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-115333 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-115333

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-115333 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-115333

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Lotus through 0.10.2 Improper Authentication via Event Ingestion API Key Prefix

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/115xxx/CVE-2026-115333.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@leediay/BkUc3WL2Mx

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/uselotus/lotus/blob/0.10.2/go/event-ingestion/authn/authn.go

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/uselotus/lotus

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/lotus-through-0.10.2-improper-authentication-via-event-ingestion-api-key-prefix

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.