CVE-2021-27670

Name: CVE-2021-27670
Creator: NVD / NIST
Published: 2021-02-25T01:15:13.163+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 61.27%

Last modified Jun 17, 2026

CVE-2021-27670 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.. EPSS estimates a 61.27% chance of exploitation in the next 30 days.

Description

Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

61.27%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Appspace	Appspace	6.2.4

References

https://github.com/h3110mb/PoCSSrfAppExploit, Third Party Advisory
https://github.com/h3110mb/PoCSSrfAppExploit, Third Party Advisory

Timeline

Published: Feb 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27670?

Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.

How severe is CVE-2021-27670?

CVE-2021-27670 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 61.27% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27670?

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-2021-27670?

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

Scan your code now

Source: NVD / NIST