CVE-2009-0804 — Ziproxy 2.6.0, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header

Back Back to CVE browser

MEDIUM

Ziproxy 2.6.0, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header

Published Mar 4, 2009

5.4

MEDIUM

CVSS 2.0

EPSS 2.38%

Description

Ziproxy 2.6.0, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.38% 0.02376

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

EPSS probability 0.02376

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 (13 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	2.38% (0.02376)	83.25th	v5 (v2026.06.15)
Jun 15, 2026	2.38% (0.02376)	81.61th	v5 (v2026.06.15)
Mar 17, 2025	0.27% (0.00270)	48.35th	v4 (v2025.03.14)
Dec 12, 2024	0.19% (0.00195)	58.43th	v3 (v2023.03.01)
Apr 25, 2024	0.17% (0.00169)	53.15th	v3 (v2023.03.01)
Mar 15, 2024	0.16% (0.00158)	51.21th	v3 (v2023.03.01)
Feb 8, 2024	0.15% (0.00150)	49.95th	v3 (v2023.03.01)
Jan 24, 2024	0.19% (0.00195)	57.54th	v3 (v2023.03.01)
Mar 7, 2023	0.19% (0.00195)	55.54th	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 (1)

CWE-264

References (3)

http://www.kb.cert.org/vuls/id/435052
third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
http://www.kb.cert.org/vuls/id/MAPG-7N9GN8
x_refsource_CONFIRMVendor Advisory
http://www.securityfocus.com/bid/33858
vdb-entryx_refsource_BID

Link	Providers	Tags
http://www.kb.cert.org/vuls/id/435052		third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
http://www.kb.cert.org/vuls/id/MAPG-7N9GN8		x_refsource_CONFIRMVendor Advisory
http://www.securityfocus.com/bid/33858		vdb-entryx_refsource_BID

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Mar 4, 2009

Updated Sep 16, 2024

Reserved Mar 4, 2009

Link CVE-2009-0804

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2009-0804

Red Hat

Severity n/a

Public date n/a

Links CVE-2009-0804