Description
Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | ≤ 2.4.68 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | apache2 | 2.4.69-1 | — |
| Debian 13 | apache2 | 2.4.69-1~deb13u1 | — |
| Debian 12 | apache2 | 2.4.71-1~deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | apache2 | 2.4.68-1ubuntu6.1 | USN-9016-1 |
| Ubuntu 26.04 LTS | apache2 | 2.4.66-2ubuntu2.6 | USN-9016-1, USN-8931-1 |
| Ubuntu 24.04 LTS | apache2 | 2.4.58-1ubuntu8.17 | USN-9016-1, USN-8931-1 |
| Ubuntu 22.04 LTS | apache2 | 2.4.52-1ubuntu4.25 | USN-9016-1, USN-8931-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | apache2 | 2.4.41-4ubuntu3.23+esm9 | USN-9016-1, USN-8931-1 |
| Ubuntu Pro 18.04 LTS | apache2 | 2.4.29-1ubuntu4.27+esm13 | USN-9016-1, USN-8931-1 |
| Ubuntu Pro 16.04 LTS | apache2 | 2.4.18-2ubuntu3.17+esm22 | USN-9016-1, USN-8931-1 |
| Ubuntu Pro 14.04 LTS | apache2 | 2.4.7-1ubuntu4.22+esm17 | USN-9016-1, USN-8931-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | httpd +10 | 2.4.69-1.hum1 | RHSA-2026:74858 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | httpd +8 | 2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux 10 | mod_ssl +1 | 1:2.4.63-13.el10_2.8 | ALSA-2026:89860 |
| AlmaLinux 9 | httpd +8 | 2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux 9 | mod_ssl +1 | 1:2.4.62-13.el9_8.9 | ALSA-2026:88229 |
| AlmaLinux 8 | httpd +6 | 2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
| AlmaLinux 8 | mod_http2 | 1.15.7-10.module_el8.10.0+4233+8b7d9181.7 | ALSA-2026:92616 |
| AlmaLinux 8 | mod_md | 1:2.0.8-8.module_el8.10.0+4295+280de5aa.4 | ALSA-2026:92616 |
| AlmaLinux 8 | mod_ssl +1 | 1:2.4.37-65.module_el8.10.0+4332+2bef2e0d.13 | ALSA-2026:92616 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | httpd | 2.4.63-13.el10_2.8 | RLSA-2026:89860 |
| Rocky Linux 9 | httpd | 2.4.62-13.el9_8.9 | RLSA-2026:88229 |
| Rocky Linux 8 | httpd | 2.4.37-65.module+el8.10.0+1830+22f0c9e0 | RLSA-2026:92616 |
| Rocky Linux 8 | mod_http2 | 1.15.7-10.module+el8.10.0+1775+6b057638 | RLSA-2026:92616 |
| Rocky Linux 8 | mod_md | 1:2.0.8-8.module+el8.9.0+1370+89cc8ad5 | RLSA-2026:92616 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | apache2 +6 | 2.4.66-150700.4.26.1 | SUSE-SU-2026:5077-1 |
| SLES 15 SP6 | apache2 +5 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 |
| SLES 15 SP5 | apache2 | 2.4.66-150400.6.60.1 | SUSE-SU-2026:5076-1 |
| SLES 15 SP4 | apache2 | 2.4.66-150400.6.60.1 | SUSE-SU-2026:5076-1 |
| SLES 12 SP5 | apache2 +1 | 2.4.66-35.84.1 | SUSE-SU-2026:5099-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | apache2 +5 | 2.4.66-150600.5.58.1 | SUSE-SU-2026:5075-1 |
| SLES for SAP 15 SP5 | apache2 | 2.4.66-150400.6.60.1 | SUSE-SU-2026:5076-1 |
| SLES for SAP 15 SP4 | apache2 | 2.4.66-150400.6.60.1 | SUSE-SU-2026:5076-1 |
| SLE HPC 15 SP5 | apache2 | 2.4.66-150400.6.60.1 | SUSE-SU-2026:5076-1 |
| SLE HPC 15 SP4 | apache2 | 2.4.66-150400.6.60.1 | SUSE-SU-2026:5076-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | apache2 | 2.4.69-r0 | — |
| Alpine v3.23 | apache2 | 2.4.69-r0 | — |
| Alpine v3.22 | apache2 | 2.4.69-r0 | — |
| Alpine v3.21 | apache2 | 2.4.69-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | httpd +8 | 2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 |
| Amazon Linux 2023 | mod_ssl +2 | 1:2.4.69-1.amzn2023.0.2 | ALAS2023-2026-3202 |
| Amazon Linux 2 | httpd +7 | 2.4.69-1.amzn2.0.3 | ALAS2-2026-3990 |
| Amazon Linux 2 | mod_ssl +2 | 1:2.4.69-1.amzn2.0.3 | ALAS2-2026-3990 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | httpd | 2.4.69-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | httpd +8 | 2.4.63-13.0.1.el10_2.8 | ELSA-2026-89860 |
| Oracle Linux 10 | mod_ssl +1 | 1:2.4.63-13.0.1.el10_2.8 | ELSA-2026-89860 |
| Oracle Linux 9 | httpd +8 | 2.4.62-13.0.1.el9_8.9 | ELSA-2026-88229 |
| Oracle Linux 9 | mod_ssl +1 | 1:2.4.62-13.0.1.el9_8.9 | ELSA-2026-88229 |
| Oracle Linux 8 | httpd +6 | 2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 | ELSA-2026-92616 |
| Oracle Linux 8 | mod_http2 | 1.15.7-10.module+el8.10.0+91023+3994037c.7 | ELSA-2026-92616 |
| Oracle Linux 8 | mod_md | 1:2.0.8-8.module+el8.10.0+91092+d4ec9ae3.4 | ELSA-2026-92616 |
| Oracle Linux 8 | mod_ssl +1 | 1:2.4.37-65.0.1.module+el8.10.0+91092+d4ec9ae3.8 | ELSA-2026-92616 |
Advisories 19
- WID-SEC-2026-3703 Apache HTTP Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- USN-9016-1 apache2 vulnerabilities Ubuntu Security Notices (USN) · Nov 11, 2026
- SUSE-SU-2026:5099-1 Security update for apache2 SUSE / openSUSE Security Updates · Nov 5, 2026
- SUSE-SU-2026:5075-1 Security update for apache2 SUSE / openSUSE Security Updates · Nov 3, 2026
- SUSE-SU-2026:5076-1 Security update for apache2 SUSE / openSUSE Security Updates · Nov 3, 2026
- SUSE-SU-2026:5077-1 Security update for apache2 SUSE / openSUSE Security Updates · Nov 3, 2026
- RLSA-2026:92616 Important: httpd:2.4 security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 30, 2026
- ALSA-2026:92616 Important: httpd:2.4 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 30, 2026
- ELSA-2026-92616 Important: httpd:2.4 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 30, 2026
- ALSA-2026:88229 Important: httpd security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:89860 Important: httpd security update AlmaLinux Security Advisories · Oct 29, 2026
- RLSA-2026:89860 Important: httpd security update Rocky Linux Security Advisories · Oct 27, 2026
- ELSA-2026-89860 Important: httpd security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 26, 2026
- RLSA-2026:88229 Important: httpd security update Rocky Linux Security Advisories · Oct 23, 2026
- ELSA-2026-88229 Important: httpd security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 22, 2026
- USN-8931-1 apache2 vulnerabilities Ubuntu Security Notices (USN) · Oct 17, 2026
- ALAS2-2026-3990 Important: httpd security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 16, 2026
- ALAS2023-2026-3202 Important: httpd security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 16, 2026
- RHSA-2026:74858 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
References
- https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisory