01 Record
CVE-2026-3472
Markdown image rendering bypass in AI bot tool result posts in Mattermost
LowPUBLISHEDCNA: Mattermost
CNA base score3.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
02 Description
Markdown image rendering bypass in AI bot tool result posts in Mattermost
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.27% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 19.1% of scored records. A rank, not a probability.
- NVD base score
- 3.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-29.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-06-26 14:42Z4 MO AGO
- Last updated
- 2026-06-26 15:41Z4 MO AGO
- Reserved
- 2026-03-03
- Assigning CNA
- Mattermost
- Record state
- PUBLISHED
- Severity
- Low (CVSS 3.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-693Protection Mechanism FailurePillar
- Data version
- 5.2
- Document digest
- 67f7a41d34b573cfa21078479e5084a35785fdc77c202fdee4722c82ac7b1e3e
05 Affected products
VendorProductVersionsPlatforms
06 References
- mattermost.comMMSA-2026-00619https://mattermost.com/security-updates
07 Remediation
Update Mattermost to versions 11.7.0, 10.11.19, 11.6.4, 11.5.7 or higher.