CVE-2025-64641 json
Mattermost Jira plugin crafted action leaks Jira issue details
published 2025-12-24 10 mo ago modified 2026-10-19 20 d ago also GHSA-vww6-79rv-3j4x , GO-2025-4260 , EUVD-2025-205062
- cvss
- 4.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
Summary
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
Patch / fix
- go github.com/mattermost/mattermost/server/v8 8.0.0-20251121122154-b57c297c6d7
- go github.com/mattermost/mattermost-server 10.11.8, 10.11.8+incompatible, 10.12.4, 10.12.4+incompatible, 11.0.6, 11.0.6+incompatible, 11.1.1, 11.1.1+incompatible
- Mattermost Mattermost 10.11.8, 10.12.4, 11.0.6, 11.1.1, 11.2.0
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260226T182644-150000.1.149.1
suse advisories SUSE-SU-2026:0757-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/mattermost/mattermost@b57c297 commit
- github.com/mattermost/mattermost#34551 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 10 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N |
| NVD | 3.1 | 4.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N |
| GitHub | 3.1 | 4.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20251121122154-b57c297c6d7 all versions |
8.0.0-20251121122154-b57c297c6d7 |
| go | github.com/mattermost/mattermost-server | >=10.11.0, <10.11.8 >=10.12.0, <10.12.4 >=11.0.0, <11.0.6 >=11.1.0, <11.1.1 >=10.11.0+incompatible, <10.11.8+incompatible >=10.12.0+incompatible, <10.12.4+incompatible >=11.0.1+incompatible, <11.0.6+incompatible >=11.1.0+incompatible, <11.1.1+incompatible |
10.11.8 10.12.4 11.0.6 11.1.1 10.11.8+incompatible 10.12.4+incompatible 11.0.6+incompatible 11.1.1+incompatible |
| go | github.com/mattermost/mattermost-server/v5 | all versions |
no fix listed |
| go | github.com/mattermost/mattermost-server/v6 | all versions |
no fix listed |
Affected products
- Mattermost Mattermost
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/mattermost/mattermost/pull/34551
web
-
github.com
/mattermost/mattermost/commit/b57c297c6d7ae6812d85e32a625806ac9555deee
web
-
mattermost.com
/security-updates
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2025-64641
advisory
-
github.com
/mattermost/mattermost
package
-
pkg.go.dev
/vuln/GO-2026-4260
web
-
github.com
/advisories/GHSA-vww6-79rv-3j4x
advisory
Sources
- CVE List CVE-2025-64641
- GitHub Advisory GHSA-vww6-79rv-3j4x
- NVD CVE-2025-64641
- OSV GO-2025-4260
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.