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CVE-2023-39655

26
FAUCET Score

CVE-2023-39655 is a critical host header injection vulnerability affecting @perfood/couch-auth versions <= 0.20.0. An attacker can craft a malicious host header in a password reset request, redirecting the password reset link to an attacker-controlled server. This allows for the theft of password reset tokens, leading to potential account takeover with a CVSS score of 9.6 (CRITICAL). Despite its high severity, there is currently no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.20.0CPE matchmatch criteria
cpe:2.3:a:perfood:couchauth:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 45th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Advisories (1)

npmGHSA-fqh6-6h6c-366mhigh

CouchAuth host header injection vulnerability leaks the password reset token

Jan 3, 2024

References

github.com / dub-flow/vulnerability-research/tree/main/CVE-2023-39655
Third Party Advisory
npmjs.com / package/%40perfood/couch-auth
Product