CVE-2025-20297Network attack vector

Browser JavaScript execution via crafted PDF payload

Published Jun 2, 2025 · Updated Jun 2, 2025

Reflected XSS in Splunk Web in affected Splunk Enterprise and Cloud Platform releases allows remote authenticated users to execute browser JavaScript. The pdfgen/render REST endpoint accepts a crafted PDF-generation payload and reflects it into browser-rendered content without neutralizing executable script. Any low-privileged account without admin or power role access can trigger the flaw; the published impact is unauthorized JavaScript execution in a user's browser.

CVSS severity4.3
Medium
EPSS probability25.89%
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 Splunk Web in affected Splunk Enterprise and Cloud Platform releases allows remote authenticated users to execute browser JavaScript. The pdfgen/render REST endpoint accepts a crafted PDF-generation payload and reflects it into browser-rendered content without neutralizing executable script. Any low-privileged account without admin or power role access can trigger the flaw; the published impact is unauthorized JavaScript execution in a user's browser.

The record

CVE
CVE-2025-20297
Published
Jun 2, 2025
Updated
Jun 2, 2025
Vendor
Splunk, Inc.
Product
Splunk Enterprise
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=9.1 <9.1.9
  2. Affected versionversion=9.2 <9.2.6
  3. Affected versionversion=9.3 <9.3.4
  4. Affected versionversion=9.4 <9.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk Enterpriseversion=9.1 <9.1.9; version=9.2 <9.2.6; version=9.3 <9.3.4; version=9.4 <9.4.2
Zoom Video Communications, Inc. · Splunk Cloud Platformversion=9.2.2406 <9.2.2406.118; version=9.3.2408 <9.3.2408.111; version=9.3.2411 <9.3.2411.102

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.3SplunkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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