CVE-2021-40369

Jspwiki vulnerability

CVSS

6.1

EPSS

3.3%

EPSS pct

87th

Exploited

No known

A carefully crafted plugin link invocation could trigger an XSS vulnerability on Apache JSPWiki, related to the Denounce plugin, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim. Apache JSPWiki users should upgrade to 2.11.0 or later.

Affected vendor

Apache

Affected product

Jspwiki

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2021-11-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2021-40369

Confirm whether Apache Jspwiki is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-40369.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-40369

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-40369 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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