CVE-2026-3946Public exploitNetwork attack vector

Stored script execution via decoded askcontent output

Published Mar 11, 2026 · Updated Mar 11, 2026

Stored cross-site scripting in PHPEMS 11.0 allows remote authenticated users to run script in an administrator's browser via askcontent. The ask_answers template applies stripslashes and html_entity_decode to stored askcontent and echoes the decoded value without neutralizing script markup. A registered user must submit the payload and an administrator must open the stored question; the script then acts in that browser session.

CVSS severity3.5
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in PHPEMS 11.0 allows remote authenticated users to run script in an administrator's browser via askcontent. The ask_answers template applies stripslashes and html_entity_decode to stored askcontent and echoes the decoded value without neutralizing script markup. A registered user must submit the payload and an administrator must open the stored question; the script then acts in that browser session.

The record

CVE
CVE-2026-3946
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
PHPEMS
Product
PHPEMS
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 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=11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PHPEMS · PHPEMSversion=11.0

Published CVSS scores

2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

Public exploit references

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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