CVE-2023-35884Network attack vector

Browser script execution via unescaped reflected input

Published Jun 20, 2023 · Updated Apr 28, 2026

Reflected XSS in EventPrime 3.0.5 and earlier allows remote attackers to execute scripts in a user's browser through a crafted link. The available advisories attribute the flaw to insufficient input sanitization and output escaping but do not identify the affected parameter or code path. Exploitation requires the target to follow an attacker-controlled link, and the resulting script runs in the target site's browser context.

CVSS severity7.1
High
EPSS probability0.41%
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 EventPrime 3.0.5 and earlier allows remote attackers to execute scripts in a user's browser through a crafted link. The available advisories attribute the flaw to insufficient input sanitization and output escaping but do not identify the affected parameter or code path. Exploitation requires the target to follow an attacker-controlled link, and the resulting script runs in the target site's browser context.

The record

CVE
CVE-2023-35884
Published
Jun 20, 2023
Updated
Apr 28, 2026
Vendor
EventPrime Events
Product
EventPrime
Classifications
CWE-79, CAPEC-591, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 20, 2023CVE 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 <=3.0.5 changes=[{"at":"3.0.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EventPrime Events · EventPrimeversion=n/a <=3.0.5 changes=[{"at":"3.0.6","status":"unaffected"}]

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
T1204.001Malicious Link

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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