CVE-2025-23048
Apache HTTP Server: mod_ssl access control bypass with session resumption
Reported by apache · Published July 10, 2025
In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| mod_lua | Amazon Linux | 2.4.64-1.amzn2023.0.1 |
| httpd | Amazon Linux | 2.4.64-1.amzn2023.0.1 |
| httpd-filesystem | Amazon Linux | 2.4.64-1.amzn2023.0.1 |
| apache | Bitnami | 2.4.64 |
| mod_ldap | Amazon Linux | 2.4.64-1.amzn2023.0.1, 2.4.64-1.amzn2.0.1 |
| httpd-devel | Amazon Linux | 2.4.64-1.amzn2.0.1 |
| mod_md | Amazon Linux | 2.4.64-1.amzn2.0.1 |
| apache2 | Alpine | 2.4.64-r0 |
| mod_ssl | Amazon Linux | 1:2.4.64-1.amzn2.0.1 |
| httpd-tools | Amazon Linux | 2.4.64-1.amzn2023.0.1, 2.4.64-1.amzn2.0.1 |
| httpd-manual | Amazon Linux | 2.4.64-1.amzn2.0.1 |
| http_server | apache | 2.4.64 |
2 more packages have a fixed version. See every fix in Lookup.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.35 |
| amazon:2023 | mod_lua | 0 |
| amazon:2023 | httpd | 0 |
| amazon:2023 | httpd-filesystem | 0 |
| amazon:2 | mod_ldap | 0 |
| amazon:2 | httpd-devel | 0 |
| amazon:2 | mod_md | 0 |
| chainguard | apache2 | * |
| alpine | apache2 | 0 |
| amazon:2 | mod_ssl | 0 |
| amazon:2023 | mod_ldap | 0 |
| amazon:2023 | httpd-tools | 0 |
| Apache Software Foundation | Apache HTTP Server | 2.4.35 |
| amazon:2 | httpd-tools | 0 |
| amazon:2 | httpd-manual | 0 |
| amazon:2023 | httpd-manual | 0 |
| amazon:2 | mod_proxy_html | 0 |
| amazon:2023 | mod_ssl | 0 |
| wolfi | apache2 | * |
| amazon:2023 | httpd-devel | 0 |
…and 6 more
Timeline
- Jul 10, 2025 Coalition ESS Score (23 in total, the first dated here)
- Jul 10, 2025 CVE Published
- Jul 11, 2025 EPSS Score (30 in total, the first dated here)
- Feb 26, 2026 CVE Updated
- Mar 17, 2026 Security Advisory (58 in total, the first dated here)
- Nov 1, 2026 Distribution Patch (47 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2025-23048
vulnetix vdb fixes CVE-2025-23048Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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