CVE-2025-9400HIGH 8.8EPSS p21.1%

CVE-2025-9400CVE-2025-9400

Description

A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.30% probability of exploitation · percentile 21.1% · 2026-06-19T12:03:05Z
Published2025-08-25
Last modified2026-04-29

Underlying weaknesses· 2

CWE-284CWE-434

References

  1. https://github.com/August829/Yu/blob/main/20250811_3.md
  2. https://github.com/August829/Yu/blob/main/20250811_3.md#poc
  3. https://vuldb.com/?ctiid.321236
  4. https://vuldb.com/?id.321236
  5. https://vuldb.com/?submit.632535

2

TypeTargetConfidenceTier
WeaknessImproper Access Controlcwe-2840%live
WeaknessUnrestricted Upload of File with Dangerous Typecwe-4340%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.