synced 1 MIN AGO
01 Record

CVE-2025-27399

Mastodon's domain blocks & rationales ignore user approval when visibility set as "users"

MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
View raw JSON

02 Description

Mastodon's domain blocks & rationales ignore user approval when visibility set as "users"

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.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 29.1% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
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
2025-02-27 17:15Z1 YR AGO
Last updated
2025-02-27 17:59Z1 YR AGO
Reserved
2025-02-24
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
  • CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
  • CWE-285Improper AuthorizationClass
Data version
5.1
Document digest
eb94e2eb4633ecf678c6e55a41cd7a3a4aa70161ac344172bf7c9a06cd00971b

05 Affected products

VendorProductVersionsPlatforms
mastodonmastodon< 4.1.23, >= 4.2.0, < 4.2.16, >= 4.3.0, < 4.3.4—

06 References