CVE-2021-23562

Name: CVE-2021-23562
Creator: NVD / NIST
Published: 2021-12-03T20:15:07.463+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.99%

Last modified Jun 17, 2026

CVE-2021-23562 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. This affects the package plupload before 2.3.9. A file name containing JavaScript code could be uploaded and run. EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

This affects the package plupload before 2.3.9. A file name containing JavaScript code could be uploaded and run. An attacker would need to trick a user to upload this kind of file.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.99%

58.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Tiny	Plupload	< 2.3.9

References

https://github.com/moxiecode/plupload/blob/master/js/jquery.plupload.queue/jquery.plupload.queue.js%23L226Broken Link
https://github.com/moxiecode/plupload/commit/d12175d4b5fa799b994ee1bb17bfbeec55b386fbPatch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-2306665Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2306663Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBMOXIECODE-2306664Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-PLUPLOAD-1583909Patch, Third Party Advisory
https://github.com/moxiecode/plupload/blob/master/js/jquery.plupload.queue/jquery.plupload.queue.js%23L226Broken Link
https://github.com/moxiecode/plupload/commit/d12175d4b5fa799b994ee1bb17bfbeec55b386fbPatch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-2306665Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-2306663Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBMOXIECODE-2306664Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-PLUPLOAD-1583909Patch, Third Party Advisory

Timeline

Published: Dec 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23562?

This affects the package plupload before 2.3.9. A file name containing JavaScript code could be uploaded and run. An attacker would need to trick a user to upload this kind of file.

How severe is CVE-2021-23562?

CVE-2021-23562 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23562?

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-2021-23562?

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

Scan your code now

Source: NVD / NIST