CVE-20XX-?

CVE-2026-3495

3.8 LOW 0.1% exploit odds Fix listed XSS Web app

What it is

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to escape some variables that could contain malicious content during error page composition which allows an attacker with access to edit some site configuration to execute some malicious code via injecting some JS as part of those values.. Mattermost Advisory ID: MMSA-2026-00622

At a glance

Exploitability
Can be exploited over the network with an admin-level account. Limited direct impact.
Exploit odds
0.1% chance of exploitation in the next 30 days (EPSS).
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. PublishedDisclosed publicly on CVE.org and NVD
  2. Last updatedMost recent change to the record

Details

Published
Last modified
Exploit probability
0.1% · EPSS, next 30 days
Weakness
CWE-79 · Cross-site scripting
Record status
Analyzed

Affected

Attack profile CVSS 3.1 · 3.8

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Raw vector

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

Meme: I wake up, CVE-2026-3495
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Fix and advisories

References

NVD record · CVE.org record