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docs(15.10): describe the OIDC nonce check - #624

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docs/oidc-nonce-15.10
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marevol wants to merge 1 commit into
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docs/oidc-nonce-15.10

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@marevol

@marevol marevol commented Oct 28, 2026

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Summary

  • config/sso-oidc: the 15.10 page said "nonce and PKCE are not used". It now describes the nonce check added in fix: send and verify the OpenID Connect nonce fess-sso-oidc#9. PKCE is still not used, and iat and nbf are still not checked.
  • install/upgrade: adds the compatibility note to the SSO plugin section: an OP that does not return the nonce claim can no longer be used (there is no setting to relax the check), and a login started before the plugin update fails once.
  • All seven languages (ja, en, de, es, fr, ko, zh-cn). The 15.9 pages are unchanged because 15.9.0 does not check the nonce.

Merge timing

fess-sso-oidc#9 is merged to main but is not in any release yet (the latest tag is fess-sso-oidc-15.9.0). Please merge this only once the 15.10.0 plugin release contains it.

fess-sso-oidc now sends a nonce with every authorization request and
refuses an ID token whose nonce claim is missing or different
(codelibs/fess-sso-oidc#9). The 15.10 OIDC page still said that the
nonce is not used.

- config/sso-oidc: describe the nonce check; PKCE is still not used and
  iat/nbf are still not checked.
- install/upgrade: add the compatibility note to the SSO section (an OP
  that does not return the nonce cannot be used; a login started before
  the plugin update fails once).

All seven languages. The 15.9 pages are unchanged, as 15.9.0 does not
check the nonce.
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