CVE-2022-23527

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.7 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 44% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.7Exploit: None knownExposed: 0

A fix is available — apply it.

mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when the destination matches a given regular expression with OIDCRedirectURLsAllowed.

CVSS v3
4.7
EG Score
4.7(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity47% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

December 14, 2022

Last Modified

November 21, 2024

References (6)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmod_auth_openidc:2.3-8090020230721123832.b46abd142023-11-14redhat
redhatmod_auth_openidc-0:2.4.9.4-4.el92023-11-07redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
libapache2-mod-auth-openidc2.3.10.2-1, 2.3.10.2-1+deb10u1, 2.3.10.2-1+deb10u22.3.10.2-1+deb10u3—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libapache2-mod-auth-openidc2.4.9-1, 2.4.9.4-0+deb11u12.4.9.4-0+deb11u2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libapache2-mod-auth-openidc—2.4.12.2-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libapache2-mod-auth-openidc—2.4.12.2-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libapache2-mod-auth-openidc—2.4.12.2-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 156 total refreshes for this CVE.

  1. 2026-09-17 19:23 UTCEPSS rescore
  2. 2026-09-16 14:05 UTCEPSS rescore
  3. 2026-09-15 03:06 UTCEPSS rescore
  4. 2026-09-13 16:43 UTCEPSS rescore
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  12. 2026-09-04 20:54 UTCOSV refresh
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  1. 2026-08-20 22:52 UTCEPSS rescore
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  3. 2026-08-18 13:45 UTCEPSS rescore
  4. 2026-08-18 08:04 UTCOSV refresh
  5. 2026-08-17 13:44 UTCEPSS rescore
  6. 2026-08-16 14:53 UTCEPSS rescore
  7. 2026-08-16 02:11 UTCEPSS rescore
  8. 2026-08-15 01:27 UTCEPSS rescore
  9. 2026-08-13 21:57 UTCEPSS rescore
  10. 2026-08-12 13:48 UTCEPSS rescore
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  18. 2026-08-03 03:27 UTCOSV refresh
  19. 2026-08-02 02:24 UTCEPSS rescore
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  21. 2026-07-30 16:25 UTCEPSS rescore
  22. 2026-07-30 01:28 UTCEPSS rescore
  23. 2026-07-28 15:33 UTCEPSS rescore
  24. 2026-07-26 14:52 UTCEPSS rescore
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  26. 2026-07-25 14:15 UTCEPSS rescore
  27. 2026-07-24 14:15 UTCEPSS rescore
  28. 2026-07-23 14:16 UTCEPSS rescore
  29. 2026-07-23 02:08 UTCEG score recompute
  30. 2026-07-22 22:55 UTCEG score recompute
  31. 2026-07-22 14:06 UTCEPSS rescore
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  33. 2026-07-21 15:22 UTCEPSS rescore
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  35. 2026-07-20 17:05 UTCEPSS rescore
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  40. 2026-07-16 17:00 UTCEPSS rescore
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  42. 2026-07-16 12:23 UTCOSV refresh
  43. 2026-07-15 16:56 UTCEPSS rescore
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  45. 2026-07-15 01:58 UTCEPSS rescore
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  47. 2026-07-13 22:27 UTCEPSS rescore
  48. 2026-07-13 06:11 UTCEPSS rescore
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  50. 2026-07-12 05:44 UTCEPSS rescore
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  52. 2026-07-09 19:07 UTCEPSS rescore
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  54. 2026-07-07 13:44 UTCEPSS rescore
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  67. 2026-06-28 11:19 UTCOSV refresh
  68. 2026-06-28 04:54 UTCEPSS rescore
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  70. 2026-06-27 03:07 UTCEPSS rescore
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  74. 2026-06-23 21:31 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2022-23527?
CVE-2022-23527 is a medium vulnerability published on December 14, 2022. modauthopenidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidcvalidateredirecturl() does not properly check…
When was CVE-2022-23527 disclosed?
CVE-2022-23527 was first published in the National Vulnerability Database on December 14, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-23527 actively exploited?
CVE-2022-23527 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.0% of all scored CVEs.
What is the CVSS score of CVE-2022-23527?
CVE-2022-23527 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2022-23527?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-23527, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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