CVE-2021-23345: Server-side Request Forgery (SSRF)

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-02-26 · updated 2026-06-17
Weakness: CWE-918

Description

All versions of package github.com/thecodingmachine/gotenberg are vulnerable to Server-side Request Forgery (SSRF) via the /convert/html endpoint when the src attribute of an HTML element refers to an internal system file, such as <iframe src='file:///etc/passwd'>.

Affected products

gotenberg: all versions

References

https://github.com/thecodingmachine/gotenberg/issues/261
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMTHECODINGMACHINEGOTENBERG-1062043
https://github.com/thecodingmachine/gotenberg/issues/261
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMTHECODINGMACHINEGOTENBERG-1062043

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