DOM based XSS Vulnerability in Apache Knox

published 2022-01-17 4 y ago modified 2026-06-17 4 mo ago also GHSA-vv38-4xcj-q4rw , EUVD-2022-0708

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.6%; EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits: 0; none known

When using Apache Knox SSO prior to 1.6.1, a request could be crafted to redirect a user to a malicious page due to improper URL parsing. A request that included a specially crafted request parameter could be used to redirect the user to a page controlled by an attacker. This URL would need to be presented to the user outside the normal request flow through a XSS or phishing campaign.

Patch / fix

fixed in 2

maven org.apache.knox:gateway-service-knoxsso 1.6.1
Apache Software Foundation Apache Knox 1.6.1

Exploit prediction

2.58% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.apache.knox:gateway-service-knoxsso	<1.6.1	1.6.1

Affected products

Apache Software Foundation Apache Knox

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

lists.apache.org /thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7j
web, mailing-list, vendor-advisory
openwall.com /lists/oss-security/2022/01/17/2
mailing-list, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-42357
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary