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CVE-2024-31204

25
FAUCET Score

CVE-2024-31204 is a Cross-Site Scripting (XSS) vulnerability affecting mailcow: dockerized versions prior to 2024-04. The flaw stems from improper sanitization and encoding of exception details, which are then rendered as executable JavaScript in the user's browser, allowing attackers to inject malicious scripts. With a CVSS score of 6.1 (Medium), this vulnerability has a network attack vector, high attack complexity, and can lead to session hijacking and unauthorized administrative actions. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2024-04CPE matchmatch criteria
cpe:2.3:a:mailcow:mailcow\:_dockerized:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
8.25%
Probability of exploitation in next 30 days
EPSS Percentile
94.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0825 is in the 100th percentile among its peer group of 17 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

vicarius.io / vsociety/posts/mailcow-with-xss-and-path-traversal-cve-2024-31204-and-cve-2024-30270
ExploitThird Party Advisory
github.com / mailcow/mailcow-dockerized/security/advisories/GHSA-fp6h-63w4-5hcm
Vendor Advisory
sonarsource.com / blog/remote-code-execution-in-mailcow-always-sanitize-error-messages
ExploitThird Party Advisory