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CVE-2022-23527

22
FAUCET Score

CVE-2022-23527 is an Open Redirect vulnerability affecting mod_auth_openidc versions prior to 2.4.12.2, which is an OpenID authentication module for Apache. An attacker can exploit this by crafting a malicious redirect URI that bypasses validation, leading to redirection to an arbitrary site. This medium-severity vulnerability (CVSS 6.1) requires user interaction and could result in information disclosure or phishing. While a patch is available in version 2.4.12.2, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.12.2CPE matchmatch criteria
cpe:2.3:a:openidc:mod_auth_openidc:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 67th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia msrc
Product: 18363-16823Fixed in: 2.4.14.2-1
microsoftpatch availablevia msrc
Product: cbl2 mod_auth_openidc 2.4.14.2-1 on CBL Mariner 2.0Fixed in: 2.4.14.2-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mod_auth_openidc:2.3-8090020230721123832.b46abd14
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: mod_auth_openidc-0:2.4.9.4-4.el9
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

redhatCVE-2022-23527Moderate

mod_auth_openidc: Open Redirect in oidc_validate_redirect_url() using tab character

Dec 14, 2022
microsoft2022-Dec/CVE-2022-23527Moderate

Open Redirect in oidc_validate_redirect_url()

Dec 13, 2022

References

github.com / zmartzone/mod_auth_openidc/blob/v2.4.12.1/auth_openidc.conf
Product
github.com / zmartzone/mod_auth_openidc/security/advisories/GHSA-q6f2-285m-gr53
Vendor Advisory
lists.debian.org / debian-lts-announce/2023/07/msg00020.html
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