CVE-2021-23772

Name: CVE-2021-23772
Creator: NVD / NIST
Published: 2021-12-24T12:15:07.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.82%

Last modified Jun 17, 2026

CVE-2021-23772 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. This affects all versions of package github.com/kataras/iris; all versions of package github.com/kataras/iris/v12. The unsafe handling of file names during upload using UploadFormFiles method may enable attackers to write to arbitrary locations outside the designated target folder.. EPSS estimates a 1.82% chance of exploitation in the next 30 days.

Description

This affects all versions of package github.com/kataras/iris; all versions of package github.com/kataras/iris/v12. The unsafe handling of file names during upload using UploadFormFiles method may enable attackers to write to arbitrary locations outside the designated target folder.

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

1.82%

76.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-59

Affected Software

Vendor	Product	Versions	Update
Iris-Go	Iris	<= 12.1.8	—
Iris-Go	Iris	12.2.0	Alpha

References

https://github.com/kataras/iris/commit/e213dba0d32ff66653e0ef124bc5088817264b08Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRIS-2325169Exploit, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRISV12-2325170Exploit, Patch, Third Party Advisory
https://github.com/kataras/iris/commit/e213dba0d32ff66653e0ef124bc5088817264b08Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRIS-2325169Exploit, Patch, Third Party Advisory
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRISV12-2325170Exploit, Patch, Third Party Advisory

Timeline

Published: Dec 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23772?

How severe is CVE-2021-23772?

CVE-2021-23772 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.82% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23772?

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-2021-23772?

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

Scan your code now

Source: NVD / NIST