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Comparison · Infra & APIs

Apereo CAS vs mod_auth_openidc

A side-by-side editorial comparison of Apereo CAS and mod_auth_openidc — release velocity, themes, recent moves, and the top alternatives to consider.

Apereo CAS vs mod_auth_openidc: at a glance

FeatureApereo CASmod_auth_openidc
SectorInfra & APIsInfra & APIs
Velocity score2.52.5
Sparks · 30d00
Top themesidentity, sso, open-source, release-candidatesapache-module, openid-connect, security-hardening, session-management
Last editorial update2mo ago1h ago
WebsiteVisit →Visit →

What is Apereo CAS?

Apereo CAS opens an 8.1 line while 8.0 is still working through release candidates.

CAS is running a long release-candidate train. The 8.0.0 line reached RC6 in late June after RC4 and RC5 in spring, and 8.1.0-RC1 has now appeared in August. A 7.3.7.1 patch in June addressed a published OIDC vulnerability on the maintenance branch. The release entries themselves carry only navigation links and contributor credits, so feature detail is not visible here.

Read the full Apereo CAS trajectory →

What is mod_auth_openidc?

mod_auth_openidc 2.4.20.4 closes a provider-to-host command execution path.

This Apache module implements OpenID Connect relying-party support, and its 2.4.20.x line has been a sustained security programme. 2.4.20.4 fixes a case where a provider could have a command run on the host via the exec: prefix in client metadata, sub-request session reuse that exposed protected content, a front-channel logout that could end another user's session, and quadratic memory use on large responses. It also adds interval-based access token refresh, cache metrics and a real readiness probe.

Read the full mod_auth_openidc trajectory →

Apereo CAS vs mod_auth_openidc: editorial side-by-side

A
Apereo CAS
INFRA · APIS
2.5

Apereo CAS opens an 8.1 line while 8.0 is still working through release candidates.

◆ Current state

CAS is running a long release-candidate train. The 8.0.0 line reached RC6 in late June after RC4 and RC5 in spring, and 8.1.0-RC1 has now appeared in August. A 7.3.7.1 patch in June addressed a published OIDC vulnerability on the maintenance branch. The release entries themselves carry only navigation links and contributor credits, so feature detail is not visible here.

◆ Where it's heading

Two lines are moving at once, which suggests 8.0 is close enough to final that work has begun branching forward rather than that the RC train has stalled. The contributor lists stay small and consistent across releases - a handful of recurring maintainers - and security handling happens on the older supported branch, as it should.

◆ Prediction

An 8.0.0 final is the obvious next milestone given RC6 was three months ago and an 8.1 branch is already open. The release bodies do not describe features, so what it contains cannot be read from this feed.

M
mod_auth_openidc
INFRA · APIS
2.5

mod_auth_openidc 2.4.20.4 closes a provider-to-host command execution path.

◆ Current state

This Apache module implements OpenID Connect relying-party support, and its 2.4.20.x line has been a sustained security programme. 2.4.20.4 fixes a case where a provider could have a command run on the host via the exec: prefix in client metadata, sub-request session reuse that exposed protected content, a front-channel logout that could end another user's session, and quadratic memory use on large responses. It also adds interval-based access token refresh, cache metrics and a real readiness probe.

◆ Where it's heading

Each 2.4.20.x release has taken one area through review: session crypto, the state-cookie parser, cache storage, and now metadata handling, sub-requests and logout. Observability is the second thread, with Prometheus self-health metrics and trace propagation added in this release.

◆ Prediction

Further 2.4.20.x security releases are likely while the review continues. The sub-request change can trigger re-authentication where OIDCStripCookies or POST-body tokens are used, so operators should test before upgrading.

Alternatives to Apereo CAS and mod_auth_openidc

Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Apereo CAS or mod_auth_openidc.

See all Apereo CAS alternatives → · See all mod_auth_openidc alternatives →

Recent activity from Apereo CAS and mod_auth_openidc

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agomod_auth_openidc2.4.20.4: metadata command execution and logout flaws fixed
  2. 2mo agomod_auth_openidcFile and shared-memory caches hardened against flooding
  3. 2mo agomod_auth_openidcUntagged GitHub artifact duplicating the 2.4.20.3 release
  4. 2mo agoApereo CASv8.1.0-RC1
  5. 2mo agomod_auth_openidcOIDCDebugMaskSecrets reopens debug logs, cache tier removed
  6. 2mo agomod_auth_openidcInternal audit finds eight issues, incl. an identity-header bypass ⚡
  7. 3mo agomod_auth_openidcPBKDF2 key stretching invalidates all existing sessions
  8. 4mo agoApereo CASv8.0.0-RC6
  9. 4mo agoApereo CASPatch release for a published OIDC vulnerability
  10. 5mo agoApereo CASv8.0.0-RC5
  11. 6mo agoApereo CASv8.0.0-RC4

Frequently asked questions

What is the difference between Apereo CAS and mod_auth_openidc?

They serve adjacent needs but don't currently overlap on shipped themes. Apereo CAS and mod_auth_openidc are shipping at a similar cadence (velocity 2.5 vs 2.5, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Apereo CAS better than mod_auth_openidc?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Apereo CAS and mod_auth_openidc are shipping at a similar cadence (velocity 2.5 vs 2.5, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to Apereo CAS?

Top Apereo CAS alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Apereo CAS alternatives" section above for the current picks, or visit /alternatives/apereo-cas for the full list with editorial commentary on each.

What are the best alternatives to mod_auth_openidc?

Top mod_auth_openidc alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "mod_auth_openidc alternatives" section above for the current picks, or visit /alternatives/mod-auth-openidc for the full list with editorial commentary on each.