CVE-2021-35491

Name: CVE-2021-35491
Creator: NVD / NIST
Published: 2021-10-05T16:15:07.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2021-35491 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A Cross-Site Request Forgery (CSRF) vulnerability in Wowza Streaming Engine through 4.8.11+5 allows a remote attacker to delete a user account via the /enginemanager/server/user/delete.htm userName parameter. The application does not implement a CSRF token for the GET request. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

A Cross-Site Request Forgery (CSRF) vulnerability in Wowza Streaming Engine through 4.8.11+5 allows a remote attacker to delete a user account via the /enginemanager/server/user/delete.htm userName parameter. The application does not implement a CSRF token for the GET request. This issue was resolved in Wowza Streaming Engine release 4.8.14.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Wowza	Streaming Engine	< 4.8.14

References

https://n4nj0.github.io/advisories/wowza-streaming-engine-i/Third Party Advisory
https://www.gruppotim.it/redteamExploit, Third Party Advisory
https://www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notesRelease Notes, Vendor Advisory
https://n4nj0.github.io/advisories/wowza-streaming-engine-i/Third Party Advisory
https://www.gruppotim.it/redteamExploit, Third Party Advisory
https://www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notesRelease Notes, Vendor Advisory

Timeline

Published: Oct 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35491?

How severe is CVE-2021-35491?

CVE-2021-35491 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35491?

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-2021-35491?

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

Scan your code now

Source: NVD / NIST