How severe is CVE-2013-3242?

CVE-2013-3242 has a CVSS 2.0 base score of 5.5, rated medium severity.

Is CVE-2013-3242 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3242?

CVE-2013-3242 primarily affects Joomla Joomla!. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3242?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-3242 published?

CVE-2013-3242 was published on 2013-05-03 and last updated on 2026-06-16.

CVE-2013-3242

CVE-2013-3242 is a medium-severity vulnerability in Joomla Joomla! with a CVSS 2.0 base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.5)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Joomla Joomla!
Published: 2013-05-03
Last modified: 2026-06-16

Description

plugins/system/remember/remember.php in Joomla! 2.5.x before 2.5.10 and 3.0.x before 3.0.4 does not properly handle an object obtained by unserializing a cookie, which allows remote authenticated users to conduct PHP object injection attacks and cause a denial of service via unspecified vectors.

Frequently asked questions

What is CVE-2013-3242?: plugins/system/remember/remember.php in Joomla! 2.5.x before 2.5.10 and 3.0.x before 3.0.4 does not properly handle an object obtained by unserializing a cookie, which allows remote authenticated users to conduct PHP object injection attacks and cause a denial of service via unspecified vectors.
How severe is CVE-2013-3242?: CVE-2013-3242 has a CVSS 2.0 base score of 5.5, rated medium severity.
Is CVE-2013-3242 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3242?: CVE-2013-3242 primarily affects Joomla Joomla!. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3242?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-3242 published?: CVE-2013-3242 was published on 2013-05-03 and last updated on 2026-06-16.

References

Affected products (14)

cpe:2.3:a:joomla:joomla\!:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.5:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.6:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.7:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.8:*:*:*:*:*:*:*
cpe:2.3:a:joomla:joomla\!:2.5.9:*:*:*:*:*:*:*

More vulnerabilities in Joomla Joomla!

CVE-2026-48904 — Critical (CVSS 9.8): An improper access check allows privelege escalation through the com_users group editing webservice endpoint.
CVE-2026-48902 — Critical (CVSS 9.8): The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't…
CVE-2026-48899 — Critical (CVSS 9.8): An improper access check allows privilege escalation through the com_users batch task.
CVE-2026-48898 — Critical (CVSS 9.8): An improper access check allows privilege escalation through the com_users batch task.
CVE-2026-40383 — Critical (CVSS 9.8): An improper validation of user-supplied input leads to a local file inclusion vulnerability.
CVE-2026-35223 — Critical (CVSS 9.8): An improper access check allows unauthorized access to com_config webservice endpoints.

All CVEs affecting Joomla Joomla! →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →