Vulnerability Description
Daptin is a GraphQL/JSON-API headless CMS. Prior to 0.12.26, the global `LanguageMiddleware` in `server/language.go` passes the raw `Accept-Language` header from `LanguageMiddlewareFunc` through `GetLanguagePreference` to `golang.org/x/text/language.ParseAcceptLanguage` without a size or shape filter. The guard for CVE-2022-32149 counts hyphens but not underscores, even though the internal parser normalizes underscores to hyphens. Long lists of underscore-separated language subtags longer than eight characters bypass the guard. These subtags fail the `len <= 8` length check in `golang.org/x/text/internal/language/parse.go`, causing repeated `gobble` operations to move the entire remaining buffer through `runtime.memmove`. With many invalid subtags, this repeated buffer movement takes quadratic work. Unauthenticated requests to the public landing page or `/api` can consume disproportionate CPU, with a 256 KiB header already causing seconds of processing and larger input permitted by the default 1 MiB header ceiling. `resource.CheckErr` also logs the entire invalid header, amplifying cost, while normal successful HTTP responses can conceal the denial-of-service traffic. Repeated requests can saturate server CPU. This issue is fixed in version 0.12.26.
Related Weaknesses (CWE)
References
- https://github.com/daptin/daptin/commit/2d70950979b51eb6c8b4234dd50558b608ad2ffe
- https://github.com/daptin/daptin/security/advisories/GHSA-rhj7-vh3v-mcq6
- https://github.com/daptin/daptin/security/advisories/GHSA-rhj7-vh3v-mcq6
FAQ
What is CVE-2026-62160?
CVE-2026-62160 is a documented vulnerability. Daptin is a GraphQL/JSON-API headless CMS. Prior to 0.12.26, the global `LanguageMiddleware` in `server/language.go` passes the raw `Accept-Language` header from `LanguageMiddlewareFunc` through `GetL...
How severe is CVE-2026-62160?
CVSS scoring is not yet available for CVE-2026-62160. Check NVD for updates.
Is there a patch for CVE-2026-62160?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.