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CVE-2008-5508

16
FAUCET Score

CVE-2008-5508 describes a URL parsing vulnerability in older versions of Mozilla Firefox, Thunderbird, and SeaMonkey. This flaw allows remote attackers to manipulate URLs using leading whitespace or control characters, potentially facilitating phishing attacks by misrepresenting legitimate website addresses. The vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack with medium complexity and a potential impact of partial integrity loss. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage for 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

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.22%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0222 is in the 69th percentile among its peer group of 19,956 CVEs.

Social Chatter

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-2008-5508Low

Firefox errors parsing URLs with control characters

Dec 16, 2008

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
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/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/47414
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11040
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
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/mfsa2008-66.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