7.5

CVE-2025-41395: Webapp DoS via malicious retrospective post in Playbooks

Analyzed
AliasesGHSA-3g36-gf7c-75qwGO-2025-3642CGA-jgwj-r7hv-q4wx
Published 24-04-2025Last modified 24-04-2025

Vulnerability summary

CVE-2025-41395 is a high (CVSS 7.5) vulnerability in mattermost. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.50%
0%100%
Low · +0.01 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 5
OPENSUSE-SU-2025:15033-1CGA-54R4-MQFG-4CF3CGA-8M6C-F44Q-9R89CGA-JWCH-FP6C-JXGVCGA-XXC2-C25V-6XJM

Timeline

  1. 24-04-2025
    PublishedVulnerability first disclosed.
  2. 24-04-2025
    Last modifiedVulnerability information updated.

Description

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.49% 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, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard2 products
  • mattermost-fips-10.5< 10.5.3-r3
  • mattermost-fips-10.5-compat< 10.5.3-r3
Github.com/mattermost2 products
  • mattermost-plugin-playbooks≥ 2.0.0 (No fix recorded) | All versions (No fix recorded) | < 1.41.0
  • mattermost-server≥ 9.11.0+incompatible (No fix recorded) | ≥ 10.4.0+incompatible (No fix recorded) | ≥ 10.5.0+incompatible (No fix recorded)
Github.com/mattermost/mattermost-server2 products
  • v5All versions (No fix recorded)
  • v6All versions (No fix recorded)
Mattermost2 products
  • mattermost≥ 10.4.0, ≤ 10.4.2 | 10.5.0 | ≥ 9.11.0, ≤ 9.11.10
  • mattermost_server≥ 9.11.0, < 9.11.11 | ≥ 10.4.0, < 10.4.3 | ≥ 10.5.0, < 10.5.1
Github.com/mattermost/mattermost/server1 product
  • v8≥ 10.4.0 (No fix recorded) | ≥ 10.5.0 (No fix recorded) | ≥ 9.11.0 (No fix recorded) | All versions (No fix recorded) | < 8.0.0-20250218121836-2b5275d87136

5 vendors · 9 products

References

7 links