CVE-2026-6433

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-05-11. NVD baseline CVSS 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.3Exploit: Elevated riskExposed: 0

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

The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
64(Track)
EG Risk 64/100SSVC: 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
Severity73% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
66%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 12, 2026

Advisory Details (1)

Auto-updated May 11, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Custom CSS JS PHP <= 2.0.7 – Unauthenticated SQL Injection to RCE | CVE 2026-6433 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/a0b1c059-e156-4402-ac8d-67f8ad7386cc/

Data Freshness Timeline

(refreshed 5× 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 210 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCmurrez/CVE-2026-6433
    First seen May 16, 2026

    PoC for CVE-2026-6433: WordPress FlipperCode Custom CSS, JS & PHP (≤2.0.7) — unauthenticated SQLi to RCE. Python 3 stdlib; single target or bulk multi-threaded scanning. Authorized testing & research only.

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-6433.yaml
    First seen Jan 1, 2026

    FlipperCode Custom CSS, JS & PHP <= 2.0.7 - Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2026-6433?
CVE-2026-6433 is a high vulnerability published on May 11, 2026. The Custom css-js-php WordPress plugin through 2.0.7 does not properly sanitize user input before using it in a SQL query, and the result is passed to eval(), allowing unauthenticated users to execute arbitrary PHP code on the server.
When was CVE-2026-6433 disclosed?
CVE-2026-6433 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6433 actively exploited?
CVE-2026-6433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 33.7% of all scored CVEs.
What is the CVSS score of CVE-2026-6433?
CVE-2026-6433 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-6433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6433, 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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