CVE-2020-13959
Medium
Description
The default error page for VelocityView in Apache Velocity Tools prior to 3.1 reflects back the vm file that was entered as part of the URL. An attacker can set an XSS payload file as this vm file in the URL which results in this payload being executed. XSS vulnerabilities allow attackers to execute arbitrary JavaScript in the context of the attacked website and the attacked user. This can be abused to steal session cookies, perform requests in the name of the victim or for phishing attacks.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Apache Velocity Tools
PublishedMar 10, 2021
First seenMar 10, 2021
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- apache velocity_tools3.1 or later
- org.apache.velocity.tools:velocity-tools-parent3.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache velocity_tools | v < 3.1 | 3.1 |
| debian debian_linux | 9.0 | — |
| org.apache.velocity.tools:velocity-tools-parentMaven | v < 3.1 | 3.1 |
| org.apache.velocity:velocity-toolsMaven | v ≤ 2.0 | — |
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