CVE-2025-0520 (GCVE-0-2025-0520)

Vulnerability from cvelistv5 – Published: 2025-04-29 19:35 – Updated: 2026-06-23 16:13
VLAI KEVIntel
Title
ShowDoc < 2.8.7 Unauthenticated File Upload Remote Code Execution
Summary
An unrestricted file upload vulnerability in ShowDoc caused by improper validation of file extension allows execution of arbitrary PHP, leading to remote code execution.This issue affects ShowDoc: before 2.8.7.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
ShowDoc ShowDoc Affected: 0 , < 2.8.7 (semver)
Create a notification for this product.
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 03837f21-b7e2-46b3-b3d6-80868f23654f

Vulnerability ID: CVE-2025-0520

Status: Confirmed

Status Updated: 2026-04-16 18:40 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-16
Asserted: 2026-04-16
Scope
Notes: KEVIntel entry: ShowDoc < 2.8.7 Unauthenticated File Upload Remote Code Execution | Affected: ShowDoc / ShowDoc | CVSS: 9.4 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title ShowDoc < 2.8.7 Unauthenticated File Upload Remote Code Execution
Vendor ShowDoc
Product ShowDoc
Added Date 2026-04-16T18:40:07.000Z
Cvss Score 9.4
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:42 UTC | Updated: 2026-06-19 12:42 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.