High severity7.7NVD Advisory· Published Apr 4, 2023· Updated Jun 17, 2026
CVE-2023-28853
CVE-2023-28853
Description
Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Starting in version 2.5.0 and prior to versions 3.5.8, 4.0.4, and 4.1.2, the LDAP query made during login is insecure and the attacker can perform LDAP injection attack to leak arbitrary attributes from LDAP database. This issue is fixed in versions 3.5.8, 4.0.4, and 4.1.2.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4Patches
Vulnerability mechanics
References
8- github.com/mastodon/mastodon/pull/24379nvdPatch
- github.com/mastodon/mastodon/security/advisories/GHSA-38g9-pfm9-gfqvnvdExploitVendor Advisory
- github.com/mastodon/mastodon/blob/94cbd808b5b3e7999c7e77dc724b7e8c9dd2bdec/app/models/concerns/ldap_authenticable.rbnvdProduct
- github.com/mastodon/mastodon/blob/94cbd808b5b3e7999c7e77dc724b7e8c9dd2bdec/config/initializers/devise.rbnvdProduct
- github.com/mastodon/mastodon/releases/tag/v3.5.8nvdRelease Notes
- github.com/mastodon/mastodon/releases/tag/v4.0.4nvdRelease Notes
- github.com/mastodon/mastodon/releases/tag/v4.1.2nvdRelease Notes
- www.openwall.com/lists/oss-security/2023/07/06/6nvd
News mentions
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