What is CVE-2020-13953?

CVE-2020-13953 is a medium-severity vulnerability in Apache Tapestry, classified under Files or Directories Accessible to External Parties. CVSS score: 5.3/10. Published 2020-09-30.

How severe is CVE-2020-13953?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2020-13953 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apache Tapestry

CVE-2020-13953

In Apache Tapestry from 5.4.0 to 5.5.0, crafting specific URLs, an attacker can download files inside the WEB-INF folder of the WAR being run.

Published 2020-09-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.027 (85.5th percentile), scored 2026-10-22.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Apache Tapestry
Apache Tapestry — versions Apache Tapestry from 5.4.0 to 5.5.0

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

Public proof-of-concept exploits

Live-Hack-CVE/CVE-2021-30638

References

lists.apache.org/thread.html/r50eb12e8a12074a9b7ed63cbab91d180d19cc23dc1da3ed5b… (Mailing List, Vendor Advisory)
lists.apache.org/thread.html/r37dab61fc7f7088d4311e7f995ef4117d58d86a675f0256ca… (mailing-list)

Frequently asked questions

What is CVE-2020-13953?: CVE-2020-13953 is a medium-severity vulnerability in Apache Tapestry, classified under Files or Directories Accessible to External Parties. CVSS score: 5.3/10. Published 2020-09-30.
How severe is CVE-2020-13953?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2020-13953 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.