CVE-2013-4547

high

Published 2013-11-23 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

8.5

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-38846 remote multiple verified

Ivan Fratric · 2013-11-19

Nginx 1.1.17 - URI Processing SecURIty Bypass

Source code queued for fetch — refresh in a moment.

OS impact

SUSE Affected 4 releases

Version	Status	Fixed in
13.1	Affected	—
12.3	Affected	—
12.2	Affected	—
11.4	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.4.4-1`
sid	Fixed	`1.4.4-1`
forky	Fixed	`1.4.4-1`
bullseye	Fixed	`1.4.4-1`
bookworm	Fixed	`1.4.4-1`

Application impact

Vendor	Product	Versions	Fixed
f5	nginx	`{"startIncluding":"0.8.41","endExcluding":"1.4.4"}`	`1.4.4`
suse	lifecycle_management_server	`1.3`
suse	studio_onsite	`1.3`
suse	webyast	`1.3`
nginx	nginx	`{"startIncluding":"0.8.41","endExcluding":"1.4.4"}`	`1.4.4`
nginx	nginx	`{"startIncluding":"1.5.0","endIncluding":"1.5.6"}`

References

CWEs

CWE-116

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.