What is CVE-2023-35075?

CVE-2023-35075 is a low-severity vulnerability in Mattermost, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 3.1/10. Published 2023-11-27.

How severe is CVE-2023-35075?

Low severity. CVSS v3 base score is 3.1 out of 10.

Is CVE-2023-35075 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mattermost

CVE-2023-35075

Mattermost fails to use innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though.

EPSS: 0.004 (29.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Mattermost — versions 0, 7.8.13, 8.1.4

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-35075?: CVE-2023-35075 is a low-severity vulnerability in Mattermost, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 3.1/10. Published 2023-11-27.
How severe is CVE-2023-35075?: Low severity. CVSS v3 base score is 3.1 out of 10.
Is CVE-2023-35075 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.