CVE-2021-33708

Name: CVE-2021-33708
Creator: NVD / NIST
Published: 2021-08-10T20:15:08.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2021-33708 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Due to insufficient input validation in Kyma, authenticated users can pass a Header of their choice and escalate privileges.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

Due to insufficient input validation in Kyma, authenticated users can pass a Header of their choice and escalate privileges.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Kyma-Project	Kyma	< 1.24

References

https://github.com/kyma-project/kyma/security/advisories/GHSA-f2jp-5gj4-q9c9Third Party Advisory
https://github.com/kyma-project/kyma/security/advisories/GHSA-f2jp-5gj4-q9c9Third Party Advisory

Timeline

Published: Aug 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33708?

Due to insufficient input validation in Kyma, authenticated users can pass a Header of their choice and escalate privileges.

How severe is CVE-2021-33708?

CVE-2021-33708 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33708?

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-2021-33708?

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

Scan your code now

Source: NVD / NIST