CVE-2009-4839: Multiple cross-site scripting (XSS) vulnerabilities in Basic Analysis and Security Engine (BASE), possibly 1.4

Q: How do I fix CVE-2009-4839?

basic analysis and security engine: upgrade to newer than 1.4.4. Exact commands for each OS are on this page.

Q: Is CVE-2009-4839 being exploited?

CVE-2009-4839 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2009-4839 affect?

CVE-2009-4839 affects basic analysis and security engine. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in Basic Analysis and Security Engine (BASE), possibly 1.4.4 and earlier, allow remote attackers to inject arbitrary web script or HTML via unspecified parameters to (1) admin/base_roleadm

Q: How urgent is CVE-2009-4839?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2009-4839 is a medium-severity flaw (CVSS 4.3) affecting basic analysis and security engine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in Basic Analysis and Security Engine (BASE), possibly 1.4.4 and earlier, allow remote attackers to inject arbitrary web script or HTML via unspecified parameters to (1) admin/base_roleadmin.php, (2) admin/base_useradmin.php, (3) base_conf_contents.php, (4) base_qry_sqlcalls.php, and (5) base_ag_main.php.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-79
Published	2010-05-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: secureideas

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2010-05-06 12:47 UTCPublished CVE record published
2026-06-16 23:14 UTCUpdated Record last modified

secureideas basic analysis and security engine UPGRADE

Affected: <= 1.4.4 · 1.1 · 1.1.2 · 1.1.3 · 1.1.4 · 1.2 · 1.2.0 · 1.2.1

Fixed in: newer than 1.4.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy basic-analysis-and-security-engine || rpm -q basic-analysis-and-security-engine || basic-analysis-and-security-engine --version

2. UPGRADE to newer than 1.4.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade basic-analysis-and-security-engine

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade basic-analysis-and-security-engine

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2009-4839?

basic analysis and security engine: upgrade to newer than 1.4.4. Exact commands for each OS are on this page.

Is CVE-2009-4839 being exploited?

CVE-2009-4839 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2009-4839 affect?

CVE-2009-4839 affects basic analysis and security engine. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in Basic Analysis and Security Engine (BASE), possibly 1.4.4 and earlier, allow remote attackers to inject arbitrary web script or HTML via unspecified parameters to (1) admin/base_roleadm

How urgent is CVE-2009-4839?

Priority 31/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2012-1199 HIGH 7.5 DOWNGRADE Multiple PHP remote file inclusion vulnerabilities in Basic Analysis and Security Engine (BASE) 1.4.5 allow re
CVE-2012-1198 HIGH 7.5 DOWNGRADE base_ag_main.php in Basic Analysis and Security Engine (BASE) 1.4.5 allows remote attackers to execute arbitra
CVE-2009-4838 HIGH 7.5 UPGRADE SQL injection vulnerability in base_ag_common.php in Basic Analysis and Security Engine (BASE) before 1.4.3.1
CVE-2009-4837 MEDIUM 4.3 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in Basic Analysis and Security Engine (BASE) before 1.4.3.
CVE-2007-6156 MEDIUM 4.3 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in base_qry_main.php in Base Analysis and Security Engine

References

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