CVE-2005-0453 — The buffer_urldecode function in Lighttpd 1.3.7 and earlier does not properly handle control characters, which allows remote attackers to obtain the source code for CGI and FastCGI scripts via a URL with a %00 (null) character after the file extension

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MEDIUM

The buffer_urldecode function in Lighttpd 1.3.7 and earlier does not properly handle control characters, which allows remote attackers to obtain the source code for CGI and FastCGI scripts via a URL with a %00 (null) character after the file extension

Published Feb 16, 2005

5.0

MEDIUM

CVSS 2.0

EPSS 1.72%

Description

The buffer_urldecode function in Lighttpd 1.3.7 and earlier does not properly handle control characters, which allows remote attackers to obtain the source code for CGI and FastCGI scripts via a URL with a %00 (null) character after the file extension.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.72% 0.01716

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01716

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.72% (0.01716)	76.59th	v5 (v2026.06.15)
Jun 15, 2026	1.72% (0.01716)	74.38th	v5 (v2026.06.15)
Mar 17, 2025	0.81% (0.00812)	72.58th	v4 (v2025.03.14)
Dec 12, 2024	0.38% (0.00378)	73.73th	v3 (v2023.03.01)
Feb 15, 2024	0.38% (0.00378)	72.16th	v3 (v2023.03.01)
Jan 24, 2024	0.38% (0.00378)	70.15th	v3 (v2023.03.01)
Jun 8, 2023	0.57% (0.00569)	74.68th	v3 (v2023.03.01)
Mar 7, 2023	0.80% (0.00802)	79.00th	v3 (v2023.03.01)
Mar 6, 2023	1.14% (0.01136)	59.45th	v2 (v2022.01.01)
Oct 18, 2022	1.14% (0.01136)	58.28th	v2 (v2022.01.01)
Apr 1, 2022	1.14% (0.01136)	56.27th	v2 (v2022.01.01)
Feb 4, 2022	1.14% (0.01136)	34.23th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (3)

http://article.gmane.org/gmane.comp.web.lighttpd/1171
x_refsource_CONFIRMPatchVendor Advisory
http://secunia.com/advisories/14297
third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
http://security.gentoo.org/glsa/glsa-200502-21.xml
vendor-advisoryx_refsource_GENTOOPatchVendor Advisory

Link	Providers	Tags
http://article.gmane.org/gmane.comp.web.lighttpd/1171		x_refsource_CONFIRMPatchVendor Advisory
http://secunia.com/advisories/14297		third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
http://security.gentoo.org/glsa/glsa-200502-21.xml		vendor-advisoryx_refsource_GENTOOPatchVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Feb 16, 2005

Updated Aug 7, 2024

Reserved Feb 16, 2005

Link CVE-2005-0453

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2005-0453

Red Hat

Severity n/a

Public date n/a

Links CVE-2005-0453