What’s Vulnerable › Vulnerabilities

CVE-2021-23772: Arbitrary File Write

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-24 · updated 2026-06-17
• Weakness: CWE-59

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.

Affected products

• Iris-Go Iris: through 12.1.8; 12.2.0-alpha, 12.2.0-alpha2, 12.2.0-alpha3, 12.2.0-alpha4, 12.2.0-alpha5

References

• https://github.com/kataras/iris/commit/e213dba0d32ff66653e0ef124bc5088817264b08
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRIS-2325169
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRISV12-2325170
• https://github.com/kataras/iris/commit/e213dba0d32ff66653e0ef124bc5088817264b08
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRIS-2325169
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMKATARASIRISV12-2325170

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