VDB
CVE-2026-33007
CVE-2026-33007
PUBLISHED
CVSS 5.3 MEDIUM
Apache HTTP Server: mod_authn_socache crash
Reported by apache · Published May 4, 2026
A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration. Users are recommended to upgrade to version 2.4.67, which fixes this issue.
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_proxy_html | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9, 2.4.37-65.module |
| mod_http2-debuginfo | errata.rockylinux.org | 1.15.7-10.module |
| mod_ldap-debuginfo | errata.rockylinux.org | 2.4.63-13.el10, 2.4.37-65.module |
| httpd-tools-debuginfo | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9, 2.4.37-65.module |
| httpd-filesystem | errata.rockylinux.org | 2.4.62-13.el9 |
| mod_session | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9, 2.4.37-65.module |
| httpd-core | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9 |
| httpd-debuginfo | errata.rockylinux.org | 2.4.63-13.el10, 2.4.37-65.module |
| mod_lua-debuginfo | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9 |
| mod_session | Amazon Linux | 2.4.67-1.amzn2.0.1 |
| httpd-debugsource | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9, 2.4.37-65.module |
| mod_lua | errata.rockylinux.org | 2.4.63-13.el10, 2.4.62-13.el9 |
25 more packages have a fixed version. See every fix in Lookup.
Risk scores
CVSS 3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.0 |
| amazon:2 | mod_session | 0 |
| amazon:2 | httpd-filesystem | 0 |
| amazon:2023 | httpd-core | 0 |
| amazon:2023 | httpd-devel | 0 |
| amazon:2023 | mod_proxy_html | 0 |
| alpine | apache2 | 0 |
| amazon:2 | httpd-tools | 0 |
| amazon:2 | mod_proxy_html | 0 |
| amazon:2 | mod_md | 0 |
| amazon:2023 | mod_ldap | 0 |
| Apache Software Foundation | Apache HTTP Server | 2.4.0 |
| amazon:2023 | mod_lua | 0 |
| amazon:2 | httpd-devel | 0 |
| amazon:2023 | httpd-tools | 0 |
| amazon:2023 | httpd | 0 |
| amazon:2 | httpd | 0 |
| amazon:2 | mod_ldap | 0 |
| amazon:2023 | mod_ssl | 0 |
| amazon:2 | mod_ssl | 0 |
…and 4 more
Timeline
- May 4, 2026 CVE Published
- May 4, 2026 PoC Published
- May 18, 2026 EPSS Score (30 in total, the first dated here)
- May 28, 2026 Security Advisory (27 in total, the first dated here)
- May 30, 2026 Distribution Patch (27 in total, the first dated here)
- Aug 2, 2026 Coalition ESS Score
- Oct 26, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-33007
vulnetix vdb fixes CVE-2026-33007Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-33007/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/05/04/22 url