CVE-2020-13959

MEDIUM

Apache Velocity Tools < 3.1 - XSS

Title source: rule

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.

Exploits (2)

nomisec WRITEUP

by dawetmaster · poc

https://github.com/dawetmaster/CVE-2020-13959-velocity-tools-vulnerable

View Code ZIP pw:eip

nomisec WRITEUP

by andikahilmy · poc

https://github.com/andikahilmy/CVE-2020-13959-velocity-tools-vulnerable

View Code ZIP pw:eip

References (7)

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2021/03/10/2

[Mailing List, Vendor Advisory] https://lists.apache.org/thread.html/r6802a38c3041059e763a1aadd7b37fe95de75408144b5805e29b84e3%40%3Cuser.velocity.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/rf9868c564cff7adfd5283563f2309b93b3e496354a211a57503b2f72%40%3Cannounce.apache.org%3E

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2021/03/msg00021.html

[Third Party Advisory] https://security.gentoo.org/glsa/202107-52

[Mailing List] https://lists.apache.org/thread.html/r97edad0655770342d2d36620fb1de50b142fcd6c4f5c53dd72ca41d7%40%3Cuser.velocity.apache.org%3E

[Mailing List] https://lists.apache.org/thread.html/rb042f3b0090e419cc9f5a3d32cf0baff283ccd6fcb1caea61915d6b6%40%3Ccommits.velocity.apache.org%3E

Scores

CVSS v3 6.1

EPSS 0.0321

EPSS Percentile 87.1%

Attack Vector NETWORK

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

Details

CWE

CWE-79

Status published

Products (4)

apache/velocity_tools < 3.1

debian/debian_linux 9.0

org.apache.velocity/velocity-tools 0Maven

org.apache.velocity.tools/velocity-tools-parent 0 - 3.1Maven

Published Mar 10, 2021

Tracked Since Feb 18, 2026