An issue was discovered in Mattermost Mobile Apps before 1.26.0.
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An issue was discovered in Mattermost Mobile Apps before 1.26.0. The Quick Reply feature mishandles crafted replies.
Why it matters now
EPSS 0.00921 60th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_mobile:*:*:*:*:*:*:*:* | before 1.26.0 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_mobile:*:*:*:*:*:*:*:* Versions before 1.26.0 Vulnerable ·Mattermost
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20848
- 2026-10-03 Alias added: GHSA-75gr-49wv-j9rw
References
Advisory 1
More Mattermost Mobile vulnerabilities
- TI-2020-11312 An issue was discovered in Mattermost Mobile Apps before 1.29.0. CVSS 3.1HIGH 7.5
- TI-2020-11310 An issue was discovered in Mattermost Mobile Apps before 1.30.0. CVSS 3.1HIGH 7.5
- TI-2019-15070 An issue was discovered in Mattermost Mobile Apps before 1.26.0. CVSS 3.1HIGH 7.5
- TI-2025-14702 Mobile crash via object that can't be cast to String in Attachment Field CVSS 3.1HIGH 7.5
- TI-2025-14379 Mobile crash via improper validation of proto style in attachments CVSS 3.1HIGH 7.5
- TI-2025-21792 Unauthorized Notification Exposure in Mobile App Under Specific Conditions CVSS 3.1HIGH 7.5
Sources
- CVE-2019-20848 · CVE Program
- CVE-2019-20848 · NVD
- FIRST EPSS
- GHSA-75gr-49wv-j9rw · GitHub Advisory Database · CC BY 4.0
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