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Vulnerability record · CVE-2021-23345 · published 26 February 2021

CVE-2021-23345: Thecodingmachine gotenberg server-side request forgery (ssrf) vulnerability

Thecodingmachine · Gotenberg

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'>.

5.3 CVSS 3.1 Medium EPSS 1.1% · top 36.0% CWE-918 · Server-side request forgery (SSRF)
5.3CVSS 3.1 base score, v2 5.0
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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'>.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-23345), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.