The protocolIs function in platform/KURLGoogle.cpp in WebCore in WebKit before r55822, as used in Google Chrome before 4.1.249.1036 and Flock Browser 3.x before 3.0.0.4112, does not properly handle whitespace at the beginning of a URL, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted javascript: URL, as demonstrated by a \x00javascript:alert sequence
Published Apr 1, 2010
4.3
MEDIUMCVSS 2.0
EPSS 1.36%
Description
The protocolIs function in platform/KURLGoogle.cpp in WebCore in WebKit before r55822, as used in Google Chrome before 4.1.249.1036 and Flock Browser 3.x before 3.0.0.4112, does not properly handle whitespace at the beginning of a URL, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted javascript: URL, as demonstrated by a \x00javascript:alert sequence.
Affected products
No data.
Configuration 1
- ≤ 4.1.249.1035
- 0.1.38.1
- 0.1.38.2
- 0.1.38.4
- 0.1.40.1
- 0.1.42.2
- 0.1.42.3
- 1.0.154.53
- 1.0.154.59
- 1.0.154.64
- 1.0.154.65
- 2.0.169.0
- 2.0.169.1
- 2.0.170.0
- 2.0.172.2
- 2.0.172.8
- 2.0.172.27
- 2.0.172.28
- 2.0.172.30
- 2.0.172.33
- 2.0.172.37
- 2.0.172.38
- 3.0.182.2
- 3.0.190.2
- 3.0.195.25
- 3.0.195.27
- 3.0.195.33
- 3.0.195.36
- 3.0.195.37
- 3.0.195.38
- 4.0.212.0
- 4.0.212.1
- 4.0.221.8
- 4.0.222.0
- 4.0.222.1
- 4.0.222.5
- 4.0.222.12
- 4.0.223.0
- 4.0.223.1
- 4.0.223.2
- 4.0.223.4
- 4.0.223.5
- 4.0.223.7
- 4.0.223.8
- 4.0.223.9
- 4.0.224.0
- 4.0.229.1
- 4.0.235.0
- 4.0.236.0
- 4.0.237.0
- 4.0.237.1
- 4.0.239.0
- 4.0.240.0
- 4.0.241.0
- 4.0.242.0
- 4.0.243.0
- 4.0.244.0
- 4.0.245.0
- 4.0.245.1
- 4.0.246.0
- 4.0.247.0
- 4.0.248.0
- 4.0.249.0
- 4.0.249.1
- 4.0.249.2
- 4.0.249.3
- 4.0.249.4
- 4.0.249.5
- 4.0.249.6
- 4.0.249.7
- 4.0.249.8
- 4.0.249.9
- 4.0.249.10
- 4.0.249.11
- 4.0.249.12
- 4.0.249.14
- 4.0.249.16
- 4.0.249.17
- 4.0.249.18
- 4.0.249.19
- 4.0.249.20
- 4.0.249.21
- 4.0.249.22
- 4.0.249.23
- 4.0.249.24
- 4.0.249.25
- 4.0.249.26
- 4.0.249.27
- 4.0.249.28
- 4.0.249.29
- 4.0.249.30
- 4.0.249.31
- 4.0.249.32
- 4.0.249.33
- 4.0.249.34
- 4.0.249.35
- 4.0.249.36
- 4.0.249.37
- 4.0.249.38
- 4.0.249.39
- 4.0.249.40
- 4.0.249.41
- 4.0.249.42
- 4.0.249.43
- 4.0.249.44
- 4.0.249.45
- 4.0.249.46
- 4.0.249.47
- 4.0.249.48
- 4.0.249.49
- 4.0.249.50
- 4.0.249.51
- 4.0.249.52
- 4.0.249.53
- 4.0.249.54
- 4.0.249.55
- 4.0.249.56
- 4.0.249.57
- 4.0.249.58
- 4.0.249.59
- 4.0.249.60
- 4.0.249.61
- 4.0.249.62
- 4.0.249.63
- 4.0.249.64
- 4.0.249.65
- 4.0.249.66
- 4.0.249.67
- 4.0.249.68
- 4.0.249.69
- 4.0.249.70
- 4.0.249.71
- 4.0.249.72
- 4.0.249.73
- 4.0.249.74
- 4.0.249.75
- 4.0.249.76
- 4.0.249.77
- 4.0.249.78
- 4.0.249.78
- 4.0.249.79
- 4.0.249.80
- 4.0.249.81
- 4.0.249.82
- 4.0.249.89
- 4.0.250.0
- 4.0.250.2
- 4.0.251.0
- 4.0.252.0
- 4.0.254.0
- 4.0.255.0
- 4.0.256.0
- 4.0.257.0
- 4.0.258.0
- 4.0.259.0
- 4.0.260.0
- 4.0.261.0
- 4.0.262.0
- 4.0.263.0
- 4.0.264.0
- 4.0.265.0
- 4.0.266.0
- 4.0.267.0
- 4.0.268.0
- 4.0.269.0
- 4.0.271.0
- 4.0.272.0
- 4.0.275.0
- 4.0.275.1
- 4.0.276.0
- 4.0.277.0
- 4.0.278.0
- 4.0.286.0
- 4.0.287.0
- 4.0.288.0
- 4.0.288.1
- 4.0.289.0
- 4.0.290.0
- 4.0.292.0
- 4.0.294.0
- 4.0.295.0
- 4.0.296.0
- 4.0.299.0
- 4.0.300.0
- 4.0.301.0
- 4.0.302.0
- 4.0.302.1
- 4.0.302.2
- 4.0.302.3
- 4.0.303.0
- 4.0.304.0
- 4.0.305.0
- 4.1.249.0
- 4.1.249.1001
- 4.1.249.1004
- 4.1.249.1006
- 4.1.249.1007
- 4.1.249.1008
- 4.1.249.1009
- 4.1.249.1010
- 4.1.249.1011
- 4.1.249.1012
- 4.1.249.1013
- 4.1.249.1014
- 4.1.249.1015
- 4.1.249.1016
- 4.1.249.1017
- 4.1.249.1018
- 4.1.249.1019
- 4.1.249.1020
- 4.1.249.1021
- 4.1.249.1022
- 4.1.249.1023
- 4.1.249.1024
- 4.1.249.1025
- 4.1.249.1026
- 4.1.249.1027
- 4.1.249.1028
- 4.1.249.1029
- 4.1.249.1030
- 4.1.249.1031
- 4.1.249.1032
- 4.1.249.1033
- 4.1.249.1034
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.36% (0.01365) | 70.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.33% (0.01334) | 67.37th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.51% (0.00508) | 64.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.49% (0.00491) | 76.91th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.49% (0.00491) | 75.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.49% (0.00491) | 72.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.96% (0.01955) | 78.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.96% (0.01955) | 76.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.96% (0.01955) | 55.71th | v2 (v2022.01.01) |
References (10)
- http://code.google.com/p/chromium/issues/detail?id=37383 x_refsource_CONFIRMExploit
- http://codereview.chromium.org/858001 x_refsource_CONFIRM
- http://flock.com/security/ x_refsource_CONFIRM
- http://googlechromereleases.blogspot.com/2010/03/stable-channel-update.html x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/43068 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://src.chromium.org/viewvc/chrome?view=rev&revision=41244 x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2011/0212 vdb-entryx_refsource_VUPENVendor Advisory
- https://bugs.webkit.org/show_bug.cgi?id=35948 x_refsource_CONFIRM
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14067 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://code.google.com/p/chromium/issues/detail?id=37383 | x_refsource_CONFIRMExploit | |
| http://codereview.chromium.org/858001 | x_refsource_CONFIRM | |
| http://flock.com/security/ | x_refsource_CONFIRM | |
| http://googlechromereleases.blogspot.com/2010/03/stable-channel-update.html | x_refsource_CONFIRM | |
| http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html | vendor-advisoryx_refsource_SUSE | |
| http://secunia.com/advisories/43068 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://src.chromium.org/viewvc/chrome?view=rev&revision=41244 | x_refsource_CONFIRM | |
| http://www.vupen.com/english/advisories/2011/0212 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://bugs.webkit.org/show_bug.cgi?id=35948 | x_refsource_CONFIRM | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14067 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.