CVE-2026-31828
highpriority · track · 35EPSS 0.004 · 39 %ileEUUSEPSS · scored 2026-10-28
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.13 and 8.6.26, the LDAP authentication adapter is vulnerable to LDAP injection. User-supplied input (authData.id) is interpolated directly into LDAP Distinguished Names (DN) and group search filters without escaping special characters. This allows an attacker with valid LDAP credentials to manipulate the bind DN structure and to bypass group membership checks. This enables privilege escalation from any authenticated LDAP user to a member of any restricted group. The vulnerability affects Parse Server deployments that use the LDAP authentication adapter with group-based access control. This vulnerability is fixed in 9.5.2-alpha.13 and 8.6.26.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2.3–8.8
ssvc
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weaknesses
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affected products (9)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-7m6r-fhh7-r47cParse Server vulnerable to LDAP injection via unsanitized user input in DN and group filter construction2026-03-11ghsa · osvUS
### Impact The LDAP authentication adapter is vulnerable to LDAP injection. User-supplied input (`authData.id`) is interpolated directly into LDAP Distinguished Names (DN) and group search filters without escaping special characters. This allows an attacker with valid LDAP credentials to manipulate the bind DN structure and to bypass group membership checks. This enables privilege escalation from any authenticated LDAP user to a member of any restricted group. The vulnerability affects Parse Server deployments that use the LDAP authentication adapter with group-based access control. ### Patches The vulnerability is fixed by escaping user input before interpolation into DN strings (per [RFC 4514](https://datatracker.ietf.org/doc/html/rfc4514#section-2.4)) and LDAP filter strings (per [RFC 4515](https://datatracker.ietf.org/doc/html/rfc4515#section-3)). ### Workarounds There is no known workaround. ### References - GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-7m6r-fhh7-r47c - Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.13 - Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.26
- BIT-parse-2026-31828Parse Server has an LDAP injection via unsanitized user input in DN and group filter construction2026-03-12vendor · osvUS
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2 and 8.6.26, the LDAP authentication adapter is vulnerable to LDAP injection. User-supplied input (authData.id) is interpolated directly into LDAP Distinguished Names (DN) and group search filters without escaping special characters. This allows an attacker with valid LDAP credentials to manipulate the bind DN structure and to bypass group membership checks. This enables privilege escalation from any authenticated LDAP user to a member of any restricted group. The vulnerability affects Parse Server deployments that use the LDAP authentication adapter with group-based access control. This vulnerability is fixed in 9.5.2 and 8.6.26.
also known as (5)
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sources
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references (10)
External citations — patches, advisories, analysis.
- https://github.com/parse-community/parse-server/releases/Patchcnnvd
- https://github.com/parse-community/parse-server/releases/tag/8.6.26cnnvd
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.13cnnvd
- https://github.com/parse-community/parse-server/security/advisories/GHSA-7m6r-fhh7-r47ccnnvd
- https://github.com/parse-community/parse-server/releases/tag/8.6.26enisa_euvd
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.13enisa_euvd
- https://github.com/parse-community/parse-server/security/advisories/GHSA-7m6r-fhh7-r47cenisa_euvd
- https://github.com/parse-community/parse-server/releases/tag/8.6.26ProductRelease Notesnvd
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