CVE-2025-23979Network attack vector

Browser script execution via reflected input

Published May 19, 2025 · Updated Apr 28, 2026

Reflected XSS in Duwasai Flashy 1.2.1 and earlier allows remote attackers to execute script in a visitor's browser via a crafted request. Patchstack has not published the affected request parameter, rendering path, or code-level failure beyond improper neutralization during page generation. Exploitation requires a visitor to open an attacker-crafted request, after which injected script runs in the site's origin and can read or alter browser-accessible data.

CVSS severity7.1
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Duwasai Flashy 1.2.1 and earlier allows remote attackers to execute script in a visitor's browser via a crafted request. Patchstack has not published the affected request parameter, rendering path, or code-level failure beyond improper neutralization during page generation. Exploitation requires a visitor to open an attacker-crafted request, after which injected script runs in the site's origin and can read or alter browser-accessible data.

The record

CVE
CVE-2025-23979
Published
May 19, 2025
Updated
Apr 28, 2026
Vendor
Duwasai
Product
Flashy
Classifications
CWE-79, CAPEC-591, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Duwasai · Flashyversion=n/a <=1.2.1

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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