6.8

CVE-2025-6233: Arbitrary file read by system admin via path traversal

Analyzed
AliasesGHSA-wvw2-3jh4-4c39GO-2025-3820
Published 18-07-2025Last modified 18-07-2025

Vulnerability summary

CVE-2025-6233 is a medium (CVSS 6.8) vulnerability in mattermost. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 38.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2025:15405-1

Timeline

  1. 18-07-2025
    PublishedVulnerability first disclosed.
  2. 18-07-2025
    Last modifiedVulnerability information updated.

Description

Mattermost versions 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to sanitize input paths of file attachments in the bulk import JSONL file, which allows a system admin to read arbitrary system files via path traversal.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

Increase +0.07 pp

From 0.38% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/mattermost/mattermost-server2 products
  • v5All versions (No fix recorded)
  • v6All versions (No fix recorded)
Mattermost2 products
  • mattermost≥ 10.8.0, ≤ 10.8.1 | ≥ 10.7.0, ≤ 10.7.3 | ≥ 10.5.0, ≤ 10.5.7 | ≥ 9.11.0, ≤ 9.11.16
  • mattermost_server≥ 9.11.0, < 9.11.17 | ≥ 10.5.0, < 10.5.8 | ≥ 10.7.0, < 10.7.4 | ≥ 10.8.0, < 10.8.2
Github.com/mattermost1 product
  • mattermost-server≥ 10.8.0, < 10.8.2 | ≥ 10.7.0, < 10.7.4 | ≥ 10.5.0, < 10.5.8 | ≥ 9.11.0, < 9.11.17 | ≥ 10.8.0+incompatible, < 10.8.2+incompatible
Github.com/mattermost/mattermost/server1 product
  • v8< 8.0.0-20250529054450-d38c27f96fcf

4 vendors · 6 products

References

5 links