CVE-2026-18801

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (30th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenMeter contains a stored, or second-order, SQL injection vulnerability in the handling of customer usage-attribution values.

An attacker who can create or update a customer can store a malicious value in the usageAttribution.key or usageAttribution.subjectKeys fields. When that customer is subsequently used in a meter or event query, OpenMeter inserts the stored value into a ClickHouse WITH map(...) expression using string concatenation.

OpenMeter versions from v1.0.0-beta.218 through v1.0.0-beta.231 are affected.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
57
EG Risk 57/100CISA SSVC

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
Severity93% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. 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
30th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 4, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Sep 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

SQL injection through customer usageAttribution subjectKeys (and key) into the shared ClickHouse meter/event query · Advisory · openmeterio/openmeter · GitHub

https://github.com/openmeterio/openmeter/security/advisories/GHSA-m2fw-9wxq-jgf5

Vendor Advisories for CVE-2026-18801(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 131× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 339 total refreshes for this CVE.

  1. 2026-10-04 23:42 UTCEG score recompute
  2. 2026-10-04 23:42 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 12:27 UTCGHSA enrichment
  5. 2026-10-04 06:14 UTCEG score recompute
  6. 2026-10-04 06:14 UTCGHSA enrichment
  7. 2026-10-03 01:59 UTCGHSA enrichment
  8. 2026-10-02 16:46 UTCEG score recompute
  9. 2026-10-02 16:46 UTCGHSA enrichment
  10. 2026-10-02 10:11 UTCEG score recompute
  11. 2026-10-02 10:11 UTCGHSA enrichment
  12. 2026-10-01 19:49 UTCEPSS rescore
  13. 2026-10-01 15:43 UTCGHSA enrichment
  14. 2026-10-01 11:19 UTCGHSA enrichment
  15. 2026-10-01 06:55 UTCGHSA enrichment
  16. 2026-10-01 02:28 UTCEG score recompute
  17. 2026-10-01 02:28 UTCGHSA enrichment
  18. 2026-09-30 15:02 UTCEPSS rescore
  19. 2026-09-29 15:20 UTCEPSS rescore
  20. 2026-09-29 06:27 UTCEG score recompute
  21. 2026-09-29 06:27 UTCGHSA enrichment
  22. 2026-09-28 12:51 UTCGHSA enrichment
  23. 2026-09-28 07:11 UTCGHSA enrichment
  24. 2026-09-28 02:47 UTCGHSA enrichment
  25. 2026-09-27 18:04 UTCEG score recompute
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  1. 2026-09-27 18:03 UTCGHSA enrichment
  2. 2026-09-27 13:47 UTCEPSS rescore
  3. 2026-09-26 15:58 UTCEPSS rescore
  4. 2026-09-25 09:11 UTCGHSA enrichment
  5. 2026-09-25 04:42 UTCEG score recompute
  6. 2026-09-25 04:42 UTCGHSA enrichment
  7. 2026-09-24 10:51 UTCGHSA enrichment
  8. 2026-09-24 06:11 UTCGHSA enrichment
  9. 2026-09-24 01:46 UTCGHSA enrichment
  10. 2026-09-23 21:23 UTCGHSA enrichment
  11. 2026-09-23 16:14 UTCEG score recompute
  12. 2026-09-23 16:14 UTCGHSA enrichment
  13. 2026-09-23 10:53 UTCGHSA enrichment
  14. 2026-09-23 06:13 UTCGHSA enrichment
  15. 2026-09-23 01:49 UTCGHSA enrichment
  16. 2026-09-22 21:24 UTCEG score recompute
  17. 2026-09-22 21:24 UTCGHSA enrichment
  18. 2026-09-22 13:07 UTCGHSA enrichment
  19. 2026-09-22 03:26 UTCEG score recompute
  20. 2026-09-22 03:26 UTCGHSA enrichment
  21. 2026-09-20 20:53 UTCEG score recompute
  22. 2026-09-20 20:53 UTCGHSA enrichment
  23. 2026-09-20 11:03 UTCGHSA enrichment
  24. 2026-09-20 03:47 UTCGHSA enrichment
  25. 2026-09-19 23:23 UTCGHSA enrichment
  26. 2026-09-19 17:52 UTCEG score recompute
  27. 2026-09-19 17:52 UTCGHSA enrichment
  28. 2026-09-19 13:28 UTCGHSA enrichment
  29. 2026-09-19 04:22 UTCGHSA enrichment
  30. 2026-09-18 23:57 UTCEG score recompute
  31. 2026-09-18 23:57 UTCGHSA enrichment
  32. 2026-09-18 19:27 UTCEPSS rescore
  33. 2026-09-18 19:17 UTCGHSA enrichment
  34. 2026-09-18 14:50 UTCGHSA enrichment
  35. 2026-09-18 09:56 UTCGHSA enrichment
  36. 2026-09-18 05:32 UTCGHSA enrichment
  37. 2026-09-18 01:08 UTCEG score recompute
  38. 2026-09-18 01:08 UTCGHSA enrichment
  39. 2026-09-17 16:15 UTCGHSA enrichment
  40. 2026-09-17 10:00 UTCGHSA enrichment
  41. 2026-09-17 05:36 UTCGHSA enrichment
  42. 2026-09-17 01:12 UTCEG score recompute
  43. 2026-09-17 01:12 UTCGHSA enrichment
  44. 2026-09-16 14:07 UTCEPSS rescore
  45. 2026-09-16 11:14 UTCGHSA enrichment
  46. 2026-09-16 05:16 UTCEG score recompute
  47. 2026-09-16 05:16 UTCGHSA enrichment
  48. 2026-09-16 05:14 UTCEPSS rescore
  49. 2026-09-15 16:49 UTCGHSA enrichment
  50. 2026-09-15 06:57 UTCEG score recompute
  51. 2026-09-15 06:57 UTCGHSA enrichment
  52. 2026-09-15 01:40 UTCGHSA enrichment
  53. 2026-09-14 15:08 UTCGHSA enrichment
  54. 2026-09-14 10:44 UTCGHSA enrichment
  55. 2026-09-14 06:20 UTCGHSA enrichment
  56. 2026-09-14 01:56 UTCGHSA enrichment
  57. 2026-09-13 21:32 UTCGHSA enrichment
  58. 2026-09-13 17:08 UTCEG score recompute
  59. 2026-09-13 17:08 UTCGHSA enrichment
  60. 2026-09-13 16:46 UTCEPSS rescore
  61. 2026-09-13 12:44 UTCGHSA enrichment
  62. 2026-09-13 08:20 UTCGHSA enrichment
  63. 2026-09-13 03:57 UTCGHSA enrichment
  64. 2026-09-12 23:33 UTCGHSA enrichment
  65. 2026-09-12 18:12 UTCEG score recompute
  66. 2026-09-12 18:12 UTCGHSA enrichment
  67. 2026-09-12 15:00 UTCEPSS rescore
  68. 2026-09-12 13:37 UTCGHSA enrichment
  69. 2026-09-12 09:13 UTCGHSA enrichment
  70. 2026-09-12 04:49 UTCGHSA enrichment
  71. 2026-09-12 00:25 UTCGHSA enrichment
  72. 2026-09-11 19:19 UTCEG score recompute
  73. 2026-09-11 19:19 UTCGHSA enrichment
  74. 2026-09-11 14:52 UTCEPSS rescore
  75. 2026-09-11 14:52 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-18801?
CVE-2026-18801 is a critical vulnerability published on August 4, 2026. OpenMeter contains a stored, or second-order, SQL injection vulnerability in the handling of customer usage-attribution values. An attacker who can create or update a customer can store a malicious value in the usageAttribution.key or usageAttribution.subjectKeys fields. When that customer is…
When was CVE-2026-18801 disclosed?
CVE-2026-18801 was first published on August 4, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18801 actively exploited?
CVE-2026-18801 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18801?
CVE-2026-18801 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-2026-18801?
A fix for CVE-2026-18801 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-18801 are linked in the Vendor Advisories panel on this page.

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