CVE-2021-35499Network attack vector

Administrative access via stored cross-site scripting

Published Oct 26, 2021 · Updated Sep 17, 2024

Stored cross-site scripting in TIBCO Nimbus Web Reporting 10.4.0 and earlier allows remote authenticated users to execute scripts. TIBCO has not published the affected input, storage path, or output-encoding failure that causes persisted content to execute in a viewer's browser. Low-privilege access can plant the content, but exploitation requires another network-connected user to view it; an administrator victim can expose full administrative control.

CVSS severity8.0
High
EPSS probability0.60%
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 TIBCO Nimbus Web Reporting 10.4.0 and earlier allows remote authenticated users to execute scripts. TIBCO has not published the affected input, storage path, or output-encoding failure that causes persisted content to execute in a viewer's browser. Low-privilege access can plant the content, but exploitation requires another network-connected user to view it; an administrator victim can expose full administrative control.

The record

CVE
CVE-2021-35499
Published
Oct 26, 2021
Updated
Sep 17, 2024
Vendor
TIBCO Software Inc.
Product
TIBCO Nimbus
Classifications
CWE-79, T1204
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record 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=unspecified <=10.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TIBCO Software Inc. · TIBCO Nimbusversion=unspecified <=10.4.0

Published CVSS scores

3.5NIST National Vulnerability DatabaseAV:N/AC:M/Au:S/C:N/I:P/A:N
8.0TIBCO Software Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204User 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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