CVE-2009-1594 — Armorlogic Profense Web Application Firewall before 2.2.22, and 2.4.x before 2.4.4, does not properly implement the "positive model," which allows remote attackers to bypass certain protection mechanisms via a %0A (encoded newline), as demonstrated by a %0A in a cross-site scripting (XSS) attack URL

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HIGH

Armorlogic Profense Web Application Firewall before 2.2.22, and 2.4.x before 2.4.4, does not properly implement the "positive model," which allows remote attackers to bypass certain protection mechanisms via a %0A (encoded newline), as demonstrated by a %0A in a cross-site scripting (XSS) attack URL

Published May 21, 2009

7.5

HIGH

CVSS 2.0

EPSS 1.45%

Description

Armorlogic Profense Web Application Firewall before 2.2.22, and 2.4.x before 2.4.4, does not properly implement the "positive model," which allows remote attackers to bypass certain protection mechanisms via a %0A (encoded newline), as demonstrated by a %0A in a cross-site scripting (XSS) attack URL.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.45% 0.01447

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.01447

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 (10 key points)

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

Date	Score	Percentile	Model
Oct 3, 2026	1.45% (0.01447)	72.41th	v5 (v2026.06.15)
Jun 15, 2026	1.45% (0.01447)	69.78th	v5 (v2026.06.15)
Mar 17, 2025	0.44% (0.00436)	60.82th	v4 (v2025.03.14)
Dec 12, 2024	0.51% (0.00511)	77.38th	v3 (v2023.03.01)
Feb 8, 2024	0.51% (0.00511)	75.91th	v3 (v2023.03.01)
Mar 7, 2023	0.51% (0.00511)	72.97th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-264

References (5)

http://resources.enablesecurity.com/advisories/ES-20090500-profense.txt
x_refsource_MISC
http://www.securityfocus.com/archive/1/503649/100/0/threaded
mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/35053
vdb-entryx_refsource_BID
http://www.webappsec.org/lists/websecurity/archive/2009-05/msg00040.html
mailing-listx_refsource_MLIST
https://exchange.xforce.ibmcloud.com/vulnerabilities/50662
vdb-entryx_refsource_XF

Link	Providers	Tags
http://resources.enablesecurity.com/advisories/ES-20090500-profense.txt		x_refsource_MISC
http://www.securityfocus.com/archive/1/503649/100/0/threaded		mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/35053		vdb-entryx_refsource_BID
http://www.webappsec.org/lists/websecurity/archive/2009-05/msg00040.html		mailing-listx_refsource_MLIST
https://exchange.xforce.ibmcloud.com/vulnerabilities/50662		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published May 21, 2009

Updated Aug 7, 2024

Reserved May 8, 2009

Link CVE-2009-1594

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2009-1594

Red Hat

Severity n/a

Public date n/a

Links CVE-2009-1594