CVE-2026-8626

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-05-20. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

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

The SponsorMe plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PHP_SELF Parameter in all versions up to, and including, 0.5.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The PHP_SELF value is reflected in two separate locations within the vulnerable function — a form action attribute and an anchor href attribute — both of which can be exploited by appending a crafted payload to the wp-admin/admin.php URL path.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
18.4%
KEV
Not listed

Published

May 20, 2026

Last Modified

May 20, 2026

References (3)

Vendor Advisories for CVE-2026-8626(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 7× in last 7d / 47× 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 102 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8626?
CVE-2026-8626 is a medium vulnerability published on May 20, 2026. The SponsorMe plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PHPSELF Parameter in all versions up to, and including, 0.5.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in…
When was CVE-2026-8626 disclosed?
CVE-2026-8626 was first published in the National Vulnerability Database on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8626 actively exploited?
CVE-2026-8626 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8626?
CVE-2026-8626 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-8626?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8626, 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

Explore the affected products and dependency analysis for CVE-2026-8626

Explore →

Is Your Infrastructure Affected by CVE-2026-8626?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs