CVE-2013-4547
nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2013-4547- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-116
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2013-4547- Updated
- 2026-11-02
EUVDEUVD-2013-4406 No score
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.
- Record
EUVD-2013-4406- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9x2q-qf8w-h347 No score
nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended...
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.
- Record
GHSA-9x2q-qf8w-h347- Weakness
- CWE-116
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2013-4547- Updated
- 2026-11-02
OSVDEBIAN-CVE-2013-4547 No score
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.
- Record
DEBIAN-CVE-2013-4547- Updated
- 2026-11-02
OSVMGASA-2013-0349 No score
Updated nginx packages fix CVE-2013-4547
Updated nginx package fixes security vulnerability:
Ivan Fratric of the Google Security Team discovered a bug in nginx, which might allow an attacker to bypass security restrictions in certain configurations by using a specially crafted request, or might have potential other impact (CVE-2013-4547).
- Record
MGASA-2013-0349- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10044-1 No score
nginx-1.11.4-2.5 on GA media
These are all security issues fixed in the nginx-1.11.4-2.5 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10044-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11341-1 No score
ruby2.7-rubygem-passenger-6.0.8-3.2 on GA media
These are all security issues fixed in the ruby2.7-rubygem-passenger-6.0.8-3.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11341-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nginxDebian:12 |
before 1.4.4-1 | 1.4.4-1 |
nginxDebian:13 |
before 1.4.4-1 | 1.4.4-1 |
nginxDebian:14 |
before 1.4.4-1 | 1.4.4-1 |
nginxDebian:7 |
before 1.2.1-2.2+wheezy2, plus listed versions 1.2.1-2.21.2.1-2.2+wheezy1 |
1.2.1-2.2+wheezy2 |
nginxMageia:2 |
before 1.0.15-2.1.mga2 | 1.0.15-2.1.mga2 |
nginxMageia:3 |
before 1.2.9-1.2.mga3 | 1.2.9-1.2.mga3 |
nginxopenSUSE:Tumbleweed From an advisory covering 11 CVEs |
before 1.11.4-2.5 | 1.11.4-2.5 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Nginx 1.1.17 - URI Processing SecURIty Bypass | 2013-11-19 |
| PoC in GitHub | cyberharsh/Nginx-CVE-2013-4547 | 2020-06-20 |
| PoC in GitHub | rsp243/fix_nginx_CVE-2013-4547_IB | 2025-12-08 |
| PoC in GitHub | CyberCTF/vulhub-nginx-cve-2013-4547 | 2026-10-08 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, exploits, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-4547 is a high vulnerability (CVSS 7.5) in F5 Nginx, published November 21, 2013. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 67.7%, the 99th percentile. Fixed in nginx 1.4.4-1.
References
secunia.com/advisories/55757
lists.opensuse.org/opensuse-security-announce/2013-12/msg00007.html
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debian.org/security/2012/dsa-2802
mailman.nginx.org/pipermail/nginx-announce/2013/000125.html
nvd.nist.gov/vuln/detail/CVE-2013-4547
github.com/advisories/GHSA-9x2q-qf8w-h347
security-tracker.debian.org/tracker/CVE-2013-4547
advisories.mageia.org/MGASA-2013-0349.html
bugs.mageia.org/show_bug.cgi?id=11710
suse.com/security/cve/CVE-2011-4315