CVE-2025-21088
- Source
- https://cve.org/CVERecord?id=CVE-2025-21088
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21088.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21088
- Aliases
- Downstream
- Related
- Published
- 2025-01-15T15:51:49.474Z
- Modified
- 2026-07-15T02:13:51.566724161Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- WebApp crash via improper validation of proto style in attachments
- Details
-
Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate the style of proto supplied to an action's style in post.props.attachments, which allows an attacker to crash the frontend via crafted malicious input.
- Database specific
{ "unresolved_ranges": [ { "extracted_events": [ { "introduced": "10.2.0" }, { "last_affected": "10.2.0" }, { "introduced": "9.11.0" }, { "last_affected": "9.11.5" }, { "introduced": "10.0.0" }, { "last_affected": "10.0.3" }, { "introduced": "10.1.0" }, { "last_affected": "10.1.3" } ], "source": "AFFECTED_FIELD" } ], "cwe_ids": [ "CWE-704" ], "cna_assigner": "Mattermost", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21088.json" }- References
Affected packages
Git / github.com/mattermost/mattermost
Affected ranges
- Type
- GIT
- Repo
- https://github.com/mattermost/mattermost
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedLast affected
- Database specific
{ "extracted_events": [ { "introduced": "9.11.0" }, { "fixed": "9.11.6" }, { "introduced": "10.0.0" }, { "fixed": "10.0.4" }, { "introduced": "10.1.0" }, { "fixed": "10.1.4" }, { "introduced": "10.2.0-NA" }, { "last_affected": "10.2.0-NA" } ], "cpe": [ "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*", "cpe:2.3:a:mattermost:mattermost_server:10.2.0:-:*:*:*:*:*:*" ], "source": [ "CPE_RANGE", "CPE_STRING" ] }
Affected versions
10.*
10.2.0-NA
@mattermost/client@10.*
@mattermost/client@10.0.0
@mattermost/client@10.1.0
@mattermost/client@9.*
@mattermost/client@9.11.0
@mattermost/types@10.*
@mattermost/types@10.0.0
@mattermost/types@10.1.0
@mattermost/types@9.*
@mattermost/types@9.11.0
v10.*
v10.0.0
v10.0.0-rc4
v10.0.1
v10.0.1-rc1
v10.0.2
v10.0.2-rc1
v10.0.2-rc2
v10.0.3
v10.0.3-rc1
v10.0.4-rc1
v10.0.4-rc2
v10.1.0
v10.1.0-rc3
v10.1.1
v10.1.1-rc1
v10.1.2
v10.1.2-rc1
v10.1.3
v10.1.3-rc1
v10.1.4-rc1
v10.2.0
v10.2.0-rc3
v9.*
v9.11.0
v9.11.0-rc3
v9.11.1
v9.11.1-rc1
v9.11.2
v9.11.2-rc1
v9.11.2-rc2
v9.11.3
v9.11.3-rc1
v9.11.3-rc2
v9.11.4
v9.11.4-rc1
v9.11.5
v9.11.5-rc1
v9.11.6-rc1
v9.11.6-rc2