Is CVE-2008-5513 being actively exploited?

CVE-2008-5513 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2008-5513?

CVE-2008-5513 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2008-5513

MEDIUM · CVSS 4.3EPSS 1.8%EU EUVD

Unspecified vulnerability in the session-restore feature in Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19 allows remote attackers to bypass the same origin policy, inject content into documents associated with other domains, and conduct cross-site scripting (XSS) attacks via unknown vectors related to restoration of SessionStore data.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 1.8% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2008-5490)
Published: December 17, 2008
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2008-5490 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
mozilla / firefox
mozilla / seamonkey
mozilla / thunderbird

References

http://secunia.com/advisories/33184(Third Party Advisory)
http://secunia.com/advisories/33188(Third Party Advisory)
http://secunia.com/advisories/33189(Third Party Advisory)
http://secunia.com/advisories/33203(Third Party Advisory)
http://secunia.com/advisories/33216(Third Party Advisory)
http://secunia.com/advisories/33231(Third Party Advisory)
http://secunia.com/advisories/33421(Third Party Advisory)
http://secunia.com/advisories/33523(Third Party Advisory)
http://secunia.com/advisories/34501(Third Party Advisory)
http://sunsolve.sun.com/search/document.do?assetkey=1-26-256408-1(Broken Link)
http://www.debian.org/security/2009/dsa-1707(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:244(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2008:245(Third Party Advisory)
http://www.mozilla.org/security/announce/2008/mfsa2008-69.html(Vendor Advisory)
http://www.redhat.com/support/errata/RHSA-2008-1036.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2008-1037.html(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2009-0002.html(Third Party Advisory)
http://www.securityfocus.com/bid/32882(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id?1021421(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/usn-690-2(Third Party Advisory)
http://www.vupen.com/english/advisories/2009/0977(Third Party Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/47418(Third Party Advisory, VDB Entry)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10389(Third Party Advisory)
https://usn.ubuntu.com/690-1/(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain