CVE-2026-1657

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-02-17. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

The EventPrime plugin for WordPress is vulnerable to unauthorized image file upload in all versions up to, and including, 4.2.8.4. This is due to the plugin registering the upload_file_media AJAX action as publicly accessible (nopriv-enabled) without implementing any authentication, authorization, or nonce verification despite a nonce being created. This makes it possible for unauthenticated attackers to upload image files to the WordPress uploads directory and create Media Library attachments via the ep_upload_file_media endpoint.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
30.3%
KEV
Not listed

Published

February 17, 2026

Last Modified

April 15, 2026

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 41× 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 108 total refreshes for this CVE.

  1. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
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  1. 2026-07-05 02:30 UTCEPSS rescore
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  21. 2026-06-19 19:25 UTCEPSS rescore
  22. 2026-06-18 17:52 UTCEPSS rescore
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  25. 2026-06-15 17:48 UTCEPSS rescore
  26. 2026-06-14 23:18 UTCEPSS rescore
  27. 2026-06-13 23:00 UTCEPSS rescore
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  30. 2026-06-12 03:14 UTCGHSA enrichment
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  33. 2026-06-10 21:12 UTCGHSA enrichment
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  35. 2026-06-09 19:30 UTCGHSA enrichment
  36. 2026-06-08 14:17 UTCEPSS rescore
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  38. 2026-06-07 17:43 UTCGHSA enrichment
  39. 2026-06-07 15:25 UTCEPSS rescore
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  41. 2026-06-06 13:47 UTCEPSS rescore
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  44. 2026-06-05 22:47 UTCEPSS rescore
  45. 2026-06-05 06:10 UTCEPSS rescore
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  47. 2026-06-04 13:12 UTCEPSS rescore
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  49. 2026-06-04 13:12 UTCEPSS rescore
  50. 2026-06-02 20:13 UTCEPSS rescore
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  52. 2026-06-01 13:51 UTCEPSS rescore
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  55. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-29 13:44 UTCEPSS rescore
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  65. 2026-05-27 13:40 UTCEPSS rescore
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  70. 2026-05-26 07:18 UTCEPSS rescore
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  73. 2026-05-22 21:16 UTCEPSS rescore
  74. 2026-05-21 22:43 UTCEPSS rescore
  75. 2026-05-20 22:52 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-1657?
CVE-2026-1657 is a medium vulnerability published on February 17, 2026. The EventPrime plugin for WordPress is vulnerable to unauthorized image file upload in all versions up to, and including, 4.2.8.4. This is due to the plugin registering the uploadfilemedia AJAX action as publicly accessible (nopriv-enabled) without implementing any authentication, authorization, or…
When was CVE-2026-1657 disclosed?
CVE-2026-1657 was first published in the National Vulnerability Database on February 17, 2026, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-1657 actively exploited?
CVE-2026-1657 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-1657?
CVE-2026-1657 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-1657?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-1657, 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.

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