Description
mod_wsgi module before 3.4 for Apache, when used in embedded mode, might allow remote attackers to obtain sensitive information via the Content-Type header which is generated from memory that may have been freed and then overwritten by a separate thread.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mod_wsgi | mod_wsgi | before 3.4 | — |
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 | mod-wsgi | 3.4-3 | — |
| Debian 13 | mod-wsgi | 3.4-3 | — |
| Debian 12 | mod-wsgi | 3.4-3 | — |
| Debian 7 | mod-wsgi | 3.3-4+deb7u1 | DSA-2937-1 |
| Debian 6.0 | mod-wsgi | 3.3-2+deb6u1 | DSA-2937-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | mod-wsgi | 3.4-4ubuntu2.1.14.04.1 | USN-2222-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | mod_wsgi | 3.2-6.el6_5 | RHSA-2014:0788 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Apache mod_wsgi - Information Disclosure EDB-39196 · remote · May 21, 2014 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- RHSA-2014:0788 Red Hat Security Advisory: mod_wsgi security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-2937-1 mod-wsgi - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2222-1 mod-wsgi vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026