CVE-2020-29456

Name: CVE-2020-29456
Creator: NVD / NIST
Published: 2020-12-02T08:15:10.62+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.53%

Last modified Jun 17, 2026

CVE-2020-29456 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Multiple cross-site scripting (XSS) vulnerabilities in Papermerge before 1.5.2 allow remote attackers to inject arbitrary web script or HTML via the rename, tag, upload, or create folder function. The payload can be in a folder, a tag, or a document's filename. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

Description

Multiple cross-site scripting (XSS) vulnerabilities in Papermerge before 1.5.2 allow remote attackers to inject arbitrary web script or HTML via the rename, tag, upload, or create folder function. The payload can be in a folder, a tag, or a document's filename. If email consumption is configured in Papermerge, a malicious document can be sent by email and is automatically uploaded into the Papermerge web application. Therefore, no authentication is required to exploit XSS if email consumption is configured. Otherwise authentication is required.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.53%

71.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Papermerge	Papermerge	< 1.5.2

References

https://github.com/ciur/papermerge/issues/228Third Party Advisory
https://github.com/ciur/papermerge/releases/tag/v1.5.2Release Notes, Third Party Advisory
https://www.papermerge.com/Product
https://github.com/ciur/papermerge/issues/228Third Party Advisory
https://github.com/ciur/papermerge/releases/tag/v1.5.2Release Notes, Third Party Advisory
https://www.papermerge.com/Product

Timeline

Published: Dec 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29456?

How severe is CVE-2020-29456?

CVE-2020-29456 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29456?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-29456?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST