CVE-2023-28853

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

1.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 68.0% 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.

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

• github.comhttps://github.com/mastodon/mastodon/security/advisories/GHSA-38g9-pfm9-gfqvx_refsource_CONFIRM
• github.comhttps://github.com/mastodon/mastodon/pull/24379x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/blob/94cbd808b5b3e7999c7e77dc724b7e8c9dd2bdec/app/models/concerns/ldap_authenticable.rb#L7-L14x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/blob/94cbd808b5b3e7999c7e77dc724b7e8c9dd2bdec/config/initializers/devise.rb#L398-L414x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v3.5.8x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.0.4x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.1.2x_refsource_MISC
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/07/06/6