CouchAuth has a Server-Side Template Injection vulnerability in its email functionality

published 2025-02-10 20 mo ago modified 2026-06-17 4 mo ago also GHSA-r385-c5fc-x56c , EUVD-2024-53538

cvss: 7.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits: 0; none known

A host header injection vulnerability exists in the NPM package of perfood/couch-auth <= 0.21.2. By sending a specially crafted host header in the email change confirmation request, it is possible to trigger a SSTI which can be leveraged to run limited commands or leak server-side information

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 20 mo ago (2025-02-11)

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
GitHub	3.1	4.3	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem	package	affected	fixed in
npm	@perfood/couch-auth	<=0.21.2	no fix listed

Classification

Weakness

CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

github.com /perfood/couch-auth
package
github.com /waristea/cve-research/tree/main/CVE-2024-57177
web
nvd.nist.gov /vuln/detail/CVE-2024-57177
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary