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CVE-2008-5506

18
FAUCET Score

CVE-2008-5506 describes a same-origin policy bypass vulnerability affecting Mozilla Firefox, Thunderbird, and SeaMonkey versions prior to their respective patches. An attacker could craft a malicious XMLHttpRequest that, through a 302 redirect to a different domain, would allow them to read content from the response, leading to "response disclosure." This vulnerability has a CVSS score of 6.8, indicating a medium severity with network access, medium attack complexity, and potential for partial confidentiality, integrity, and availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0, < 2.0.0.19CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 3.0, < 3.0.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 1.0, < 1.1.14CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
>= 2.0, < 2.0.0.19CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
6.06CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 66th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.19-1.el5_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.9-0.25.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.29.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.0.5-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: nspr-0:4.7.3-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: nss-0:3.12.2.0-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-32.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-18.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.5-1.el5_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nspr-0:4.7.3-2.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nss-0:3.12.2.0-2.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.5-1.el5_2
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2008-5506Moderate

Firefox XMLHttpRequest 302 response disclosure

Dec 16, 2008

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
secunia.com / advisories/33184
Third Party Advisory
secunia.com / advisories/33188
Third Party Advisory
secunia.com / advisories/33189
Third Party Advisory
secunia.com / advisories/33203
Third Party Advisory
secunia.com / advisories/33204
Third Party Advisory
secunia.com / advisories/33205
Third Party Advisory
secunia.com / advisories/33216
Third Party Advisory
secunia.com / advisories/33231
Third Party Advisory
secunia.com / advisories/33232
Third Party Advisory
secunia.com / advisories/33408
Third Party Advisory
secunia.com / advisories/33415
Third Party Advisory
secunia.com / advisories/33421
Third Party Advisory
secunia.com / advisories/33433
Third Party Advisory
secunia.com / advisories/33434
Third Party Advisory
secunia.com / advisories/33523
Third Party Advisory
secunia.com / advisories/33547
Third Party Advisory
secunia.com / advisories/34501
Third Party Advisory
secunia.com / advisories/35080
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/47412
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10512
Third Party Advisory
sunsolve.sun.com / search/document.do
Broken Link
sunsolve.sun.com / search/document.do
Broken Link
usn.ubuntu.com / 690-1
Third Party Advisory
usn.ubuntu.com / 690-3
Third Party Advisory
debian.org / security/2009/dsa-1696
Third Party Advisory
debian.org / security/2009/dsa-1697
Third Party Advisory
debian.org / security/2009/dsa-1704
Third Party Advisory
debian.org / security/2009/dsa-1707
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
mozilla.org / security/announce/2008/mfsa2008-64.html
Vendor Advisory
redhat.com / support/errata/RHSA-2008-1036.html
Third Party Advisory
redhat.com / support/errata/RHSA-2008-1037.html
Third Party Advisory
redhat.com / support/errata/RHSA-2009-0002.html
Third Party Advisory
securityfocus.com / bid/32882
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
ubuntu.com / usn/usn-690-2
Third Party Advisory
ubuntu.com / usn/usn-701-1
Third Party Advisory
ubuntu.com / usn/usn-701-2
Third Party Advisory
vupen.com / english/advisories/2009/0977
Third Party Advisory