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01 Record

CVE-2023-28853

Mastodon's blind LDAP injection in login allows the attacker to leak arbitrary attributes from LDAP database

HighPUBLISHEDCNA: GitHub_M
CNA base score7.7 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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02 Description

Mastodon's blind LDAP injection in login allows the attacker to leak arbitrary attributes from LDAP database

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • 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
1.27% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 69.5% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. 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
2023-04-04 21:14Z3 YR AGO
Last updated
2025-02-13 16:48Z1 YR AGO
Reserved
2023-03-24
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weaknesses
  • CWE-90Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')Base
  • CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
Data version
5.1
Document digest
83a28cdeaff6c54200bfecde70a0210f121d8ed4929ba622b739d063be47acdc

05 Affected products

VendorProductVersionsPlatforms
mastodonmastodon>= 2.5.0, < 3.5.8, >= 4.0.0, < 4.0.4, >= 4.1.0, < 4.1.2—

06 References