CVE-2025-27319Network attack vector

Browser script execution via reflected request input

Published Apr 17, 2025 · Updated Apr 28, 2026

Reflected XSS in ivan82 User List 1.5.1 and earlier allows remote attackers to execute scripts through a crafted request. Patchstack has not published the exact request parameter or rendering locus that reflects untrusted input without safe output encoding. Exploitation requires a user to open the crafted request, after which attacker-supplied script runs in that user's browser under the WordPress site's origin.

CVSS severity7.1
High
EPSS probability0.29%
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 ivan82 User List 1.5.1 and earlier allows remote attackers to execute scripts through a crafted request. Patchstack has not published the exact request parameter or rendering locus that reflects untrusted input without safe output encoding. Exploitation requires a user to open the crafted request, after which attacker-supplied script runs in that user's browser under the WordPress site's origin.

The record

CVE
CVE-2025-27319
Published
Apr 17, 2025
Updated
Apr 28, 2026
Vendor
ivan82
Product
User List
Classifications
CWE-79, CAPEC-591, T1059.007, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 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=0 <=1.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ivan82 · User Listversion=0 <=1.5.1

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
T1059.007JavaScript/JScript
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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