CVE-2026-8181

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 15%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Burst Statistics – Privacy-Friendly WordPress Analytics (Google Analytics Alternative) plugin for WordPress is vulnerable to Authentication Bypass in versions 3.4.0 to 3.4.1.1. This is due to incorrect return-value handling in the is_mainwp_authenticated() function when validating application passwords from the Authorization header. This makes it possible for unauthenticated attackers, with knowledge of an administrator username, to impersonate that administrator for the duration of the request by supplying any random Basic Authentication password achieving privilege escalation.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track)
EG Risk 75/100SSVC: Track

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
15%
EPSS %ILE
96%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 14, 2026

Advisory Details (1)

Auto-updated Jul 26, 2026
No patch confirmed yet.
generic

burst-statistics/includes/Frontend/class-mainwp-proxy.php at 2488d3fa54045e7e5342b0445b9f6b5eaac9ea7c · Burst-Statistics/burst-statistics · GitHub

https://github.com/Burst-Statistics/burst-statistics/blob/2488d3fa54045e7e5342b0445b9f6b5eaac9ea7c/includes/Frontend/class-mainwp-proxy.php#L385

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 30× 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 177 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCmurrez/CVE-2026-8181
    First seen May 15, 2026

    CVE-2026-8181 PoC: Burst Statistics (3.4.0–3.4.1.1) authentication bypass. Python tool — single & multi-target scans, threaded workers, TXT reports. Authorized testing only. Maintainer: mürrez.

    Open source ↗
  • GitHub PoCzycoder0day/CVE-2026-8181
    First seen May 14, 2026

    CVE-2026-8181 - Burst Statistics 3.4.0-3.4.1.1 Unauthenticated Authentication Bypass to Admin Account Takeover | Proof of Concept

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-8181.yaml
    First seen Jan 1, 2026

    WordPress Burst Statistics 3.4.0-3.4.1.1 - Authentication Bypass

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8181?
CVE-2026-8181 is a critical vulnerability published on May 14, 2026. The Burst Statistics – Privacy-Friendly WordPress Analytics (Google Analytics Alternative) plugin for WordPress is vulnerable to Authentication Bypass in versions 3.4.0 to 3.4.1.1. This is due to incorrect return-value handling in the ismainwpauthenticated() function when validating application…
When was CVE-2026-8181 disclosed?
CVE-2026-8181 was first published in the National Vulnerability Database on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8181 actively exploited?
CVE-2026-8181 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15% probability of exploitation in the next 30 days, which ranks it in the top 3.7% of all scored CVEs.
What is the CVSS score of CVE-2026-8181?
CVE-2026-8181 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-8181?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8181, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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