Description
nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended restrictions via an unescaped space character in a URI.
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 | nginx | 1.4.4-1 | — |
| Debian 13 | nginx | 1.4.4-1 | — |
| Debian 12 | nginx | 1.4.4-1 | — |
| Debian 7 | nginx | 1.2.1-2.2+wheezy2 | DSA-2802-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | nginx | 1.11.4-2.5 | openSUSE-SU-2024:10044-1 |
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
- Nginx 1.1.17 - URI Processing SecURIty Bypass EDB-38846 · remote · Nov 19, 2013 · verified
GitHub 3 repositories
-
cyberharsh/Nginx-CVE-2013-4547 ★ 3 · Jun 20, 2020
-
CyberCTF/vulhub-nginx-cve-2013-4547 ★ 0 · Oct 8, 2026
Vulhub nginx/CVE-2013-4547: Nginx Filename Logic Vulnerability (CVE-2013-4547), run with Isoloom
-
rsp243/fix_nginx_CVE-2013-4547_IB ★ 0 · Dec 8, 2025
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- DSA-2802-1 nginx - restriction bypass Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10044-1 nginx-1.11.4-2.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 55757 third-party-advisory
- SUSE-SU-2013:1895 vendor-advisory
- openSUSE-SU-2013:1745 vendor-advisory
- 55825 third-party-advisory
- 55822 third-party-advisory
- openSUSE-SU-2013:1792 vendor-advisory
- openSUSE-SU-2013:1791 vendor-advisory
- DSA-2802 vendor-advisory
- [nginx-announce] 20131119 nginx security advisory (CVE-2013-4547) mailing-list