CVE-2016-5282
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which...
CVE-2016-5282 is a medium vulnerability (CVSS 6.5) in Mozilla Firefox, published September 22, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.61%, the 75th percentile. Fixed in firefox 49.0+build4-0ubuntu0.14.04.1.
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by a jar: URL for a favicon resource.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
6.5
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by a jar: URL for a favicon resource.
- Record
CVE-2016-5282- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by a jar: URL for a favicon resource.
- Record
CVE-2016-5282- Updated
- 2026-11-02
EUVDEUVD-2016-6233 No score
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by a jar: URL for a favicon resource.
- Record
EUVD-2016-6233- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gf3r-ccj6-h68v
6.5
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which...
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by a jar: URL for a favicon resource.
- Record
GHSA-gf3r-ccj6-h68v- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-5282
6.5
Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by a jar: URL for a favicon resource.
- Record
UBUNTU-CVE-2016-5282- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10071-1 No score
MozillaFirefox-50.1.0-1.1 on GA media
These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10071-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score
firefox-esr-128.5.1-1.1 on GA media
These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:14572-1- Updated
- 2026-11-02
OSVUSN-3076-1 No score
firefox vulnerabilities
Atte Kettunen discovered an out-of-bounds read when handling certain Content Security Policy (CSP) directives in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash. (CVE-2016-2827)
Christoph Diehl, Christian Holler, Gary Kwong, Nathan Froyd, Honza Bambas, Seth Fowler, Michael Smith, Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard, Steve Fink, Tyson Smith, and Carsten Book discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5256, CVE-2016-5257)
Atte Kettunen discovered a heap buffer overflow during text conversion with some unicode characters. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5270)
Abhishek Arya discovered an out of bounds read during the processing of text runs in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash. (CVE-2016-5271)
Abhishek Arya discovered a bad cast when processing layout with input elements in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5272)
A crash was discovered in accessibility. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to execute arbitrary code. (CVE-2016-5273)
A use-after-free was discovered in web animations during restyling. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5274)
A buffer overflow was discovered when working with empty filters during canvas rendering. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5275)
A use-after-free was discovered in accessibility. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5276)
A use-after-free was discovered in web animations when destroying a timeline. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5277)
A buffer overflow was discovered when encoding image frames to images in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5278)
Rafael Gieschke discovered that the full path of files is available to web pages after a drag and drop operation. An attacker could potentially exploit this to obtain sensitive information. (CVE-2016-5279)
Mei Wang discovered a use-after-free when changing text direction. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5280)
Brian Carpenter discovered a use-after-free when manipulating SVG content in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via…
- Record
USN-3076-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
firefoxUbuntu:14.04:LTS |
before 49.0+build4-0ubuntu0.14.04.1, plus listed versions 24.0+build1-0ubuntu125.0+build3-0ubuntu0.13.10.128.0~b2+build1-0ubuntu228.0+build1-0ubuntu128.0+build2-0ubuntu1 Show 38 moreShow less28.0+build2-0ubuntu229.0+build1-0ubuntu0.14.04.230.0+build1-0ubuntu0.14.04.331.0+build1-0ubuntu0.14.04.132.0+build1-0ubuntu0.14.04.132.0.3+build1-0ubuntu0.14.04.133.0+build2-0ubuntu0.14.04.134.0+build2-0ubuntu0.14.04.135.0+build3-0ubuntu0.14.04.235.0.1+build1-0ubuntu0.14.04.136.0+build2-0ubuntu0.14.04.436.0.1+build2-0ubuntu0.14.04.136.0.4+build1-0ubuntu0.14.04.137.0+build2-0ubuntu0.14.04.137.0.1+build1-0ubuntu0.14.04.137.0.2+build1-0ubuntu0.14.04.138.0+build3-0ubuntu0.14.04.139.0+build5-0ubuntu0.14.04.139.0.3+build2-0ubuntu0.14.04.140.0+build4-0ubuntu0.14.04.140.0+build4-0ubuntu0.14.04.440.0.3+build1-0ubuntu0.14.04.141.0+build3-0ubuntu0.14.04.141.0.1+build2-0ubuntu0.14.04.141.0.2+build2-0ubuntu0.14.04.142.0+build2-0ubuntu0.14.04.143.0+build1-0ubuntu0.14.04.143.0.4+build3-0ubuntu0.14.04.144.0+build3-0ubuntu0.14.04.144.0.1+build2-0ubuntu0.14.04.144.0.2+build1-0ubuntu0.14.04.145.0+build2-0ubuntu0.14.04.145.0.1+build1-0ubuntu0.14.04.245.0.2+build1-0ubuntu0.14.04.146.0+build5-0ubuntu0.14.04.246.0.1+build1-0ubuntu0.14.04.347.0+build3-0ubuntu0.14.04.148.0+build2-0ubuntu0.14.04.1 |
49.0+build4-0ubuntu0.14.04.1 |
firefoxUbuntu:16.04:LTS |
before 49.0+build4-0ubuntu0.16.04.1, plus listed versions 41.0.2+build2-0ubuntu142.0+build2-0ubuntu144.0+build3-0ubuntu244.0.1+build1-0ubuntu144.0.2+build1-0ubuntu1 Show 7 moreShow less45.0+build2-0ubuntu145.0.1+build1-0ubuntu145.0.2+build1-0ubuntu146.0+build5-0ubuntu0.16.04.246.0.1+build1-0ubuntu0.16.04.247.0+build3-0ubuntu0.16.04.148.0+build2-0ubuntu0.16.04.1 |
49.0+build4-0ubuntu0.16.04.1 |
MozillaFirefoxopenSUSE:Tumbleweed |
before 50.1.0-1.1 | 50.1.0-1.1 |
firefox-esropenSUSE:Tumbleweed |
before 128.5.1-1.1 | 128.5.1-1.1 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
mozilla.org/security/announce/2016/mfsa2016-85.html
bugzilla.mozilla.org/show_bug.cgi?id=932335
securityfocus.com/bid/93052
security.gentoo.org/glsa/201701-15
securitytracker.com/id/1036852
nvd.nist.gov/vuln/detail/CVE-2016-5282
Show 194 moreShow less
github.com/advisories/GHSA-gf3r-ccj6-h68v
ubuntu.com/security/CVE-2016-5282
mozilla.org/en-US/security/advisories/mfsa2016-85
ubuntu.com/security/notices/USN-3076-1
cve.org/CVERecord?id=CVE-2016-5282
ubuntu.com/security/CVE-2016-2827
ubuntu.com/security/CVE-2016-5256
ubuntu.com/security/CVE-2016-5257
ubuntu.com/security/CVE-2016-5270
ubuntu.com/security/CVE-2016-5271
ubuntu.com/security/CVE-2016-5272
ubuntu.com/security/CVE-2016-5273
ubuntu.com/security/CVE-2016-5274
ubuntu.com/security/CVE-2016-5275
ubuntu.com/security/CVE-2016-5276
ubuntu.com/security/CVE-2016-5277
ubuntu.com/security/CVE-2016-5278
ubuntu.com/security/CVE-2016-5279
ubuntu.com/security/CVE-2016-5280
ubuntu.com/security/CVE-2016-5281
ubuntu.com/security/CVE-2016-5283
ubuntu.com/security/CVE-2016-5284
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suse.com/security/cve/CVE-2009-2470
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suse.com/security/cve/CVE-2009-3070
suse.com/security/cve/CVE-2009-3071
suse.com/security/cve/CVE-2009-3072
suse.com/security/cve/CVE-2009-3073
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suse.com/security/cve/CVE-2009-3079
suse.com/security/cve/CVE-2009-3274
suse.com/security/cve/CVE-2009-3370
suse.com/security/cve/CVE-2009-3371
suse.com/security/cve/CVE-2009-3372
suse.com/security/cve/CVE-2009-3373
suse.com/security/cve/CVE-2009-3374
suse.com/security/cve/CVE-2009-3375
suse.com/security/cve/CVE-2009-3376
suse.com/security/cve/CVE-2009-3377
suse.com/security/cve/CVE-2009-3378
suse.com/security/cve/CVE-2009-3379
suse.com/security/cve/CVE-2009-3380
suse.com/security/cve/CVE-2009-3381
suse.com/security/cve/CVE-2009-3383
suse.com/security/cve/CVE-2009-3388
suse.com/security/cve/CVE-2009-3389
suse.com/security/cve/CVE-2009-3555
suse.com/security/cve/CVE-2009-3979
suse.com/security/cve/CVE-2009-3980
suse.com/security/cve/CVE-2009-3982
suse.com/security/cve/CVE-2009-3983
suse.com/security/cve/CVE-2009-3984
suse.com/security/cve/CVE-2009-3985
suse.com/security/cve/CVE-2010-0164
suse.com/security/cve/CVE-2010-0165
suse.com/security/cve/CVE-2010-0166
suse.com/security/cve/CVE-2010-0167
suse.com/security/cve/CVE-2010-0168
suse.com/security/cve/CVE-2010-0169
suse.com/security/cve/CVE-2010-0170
suse.com/security/cve/CVE-2010-0171
suse.com/security/cve/CVE-2010-0172
suse.com/security/cve/CVE-2010-0173
suse.com/security/cve/CVE-2010-0174
suse.com/security/cve/CVE-2010-0176
suse.com/security/cve/CVE-2010-0177
suse.com/security/cve/CVE-2010-0178
suse.com/security/cve/CVE-2010-0181
suse.com/security/cve/CVE-2010-0182
suse.com/security/cve/CVE-2010-0654
suse.com/security/cve/CVE-2010-1028
suse.com/security/cve/CVE-2010-1121
suse.com/security/cve/CVE-2010-1125
suse.com/security/cve/CVE-2010-1196
suse.com/security/cve/CVE-2010-1197
suse.com/security/cve/CVE-2010-1198
suse.com/security/cve/CVE-2010-1199
suse.com/security/cve/CVE-2010-1200
suse.com/security/cve/CVE-2010-1201
suse.com/security/cve/CVE-2010-1202
suse.com/security/cve/CVE-2010-1203
suse.com/security/cve/CVE-2010-1205
suse.com/security/cve/CVE-2010-1206
suse.com/security/cve/CVE-2010-1207
suse.com/security/cve/CVE-2010-1208
suse.com/security/cve/CVE-2010-1209
suse.com/security/cve/CVE-2010-1210
suse.com/security/cve/CVE-2010-1211
suse.com/security/cve/CVE-2010-1212
suse.com/security/cve/CVE-2010-1213
suse.com/security/cve/CVE-2010-1214
suse.com/security/cve/CVE-2010-1215
suse.com/security/cve/CVE-2010-2751
suse.com/security/cve/CVE-2010-2752
suse.com/security/cve/CVE-2010-2753
suse.com/security/cve/CVE-2010-2754
suse.com/security/cve/CVE-2010-2755
suse.com/security/cve/CVE-2010-2760
suse.com/security/cve/CVE-2010-2762
suse.com/security/cve/CVE-2010-2764
suse.com/security/cve/CVE-2010-2765
suse.com/security/cve/CVE-2010-2766
suse.com/security/cve/CVE-2010-2767
suse.com/security/cve/CVE-2010-2768
suse.com/security/cve/CVE-2010-2769
suse.com/security/cve/CVE-2010-3166
suse.com/security/cve/CVE-2010-3167
suse.com/security/cve/CVE-2010-3168
suse.com/security/cve/CVE-2010-3169
suse.com/security/cve/CVE-2010-3170
suse.com/security/cve/CVE-2010-3173
suse.com/security/cve/CVE-2010-3174
suse.com/security/cve/CVE-2010-3175
suse.com/security/cve/CVE-2010-3176
suse.com/security/cve/CVE-2010-3177
suse.com/security/cve/CVE-2010-3178
suse.com/security/cve/CVE-2010-3179
suse.com/security/cve/CVE-2010-3180
suse.com/security/cve/CVE-2010-3182
suse.com/security/cve/CVE-2010-3183
suse.com/security/cve/CVE-2010-3765
suse.com/security/cve/CVE-2011-0068
suse.com/security/cve/CVE-2011-0069
suse.com/security/cve/CVE-2011-0070
suse.com/security/cve/CVE-2011-0079
suse.com/security/cve/CVE-2011-0080
suse.com/security/cve/CVE-2011-0081
suse.com/security/cve/CVE-2011-0084
suse.com/security/cve/CVE-2011-1187
suse.com/security/cve/CVE-2011-1202
suse.com/security/cve/CVE-2011-2366
suse.com/security/cve/CVE-2011-2367
suse.com/security/cve/CVE-2011-2368
suse.com/security/cve/CVE-2011-2369
suse.com/security/cve/CVE-2011-2370
suse.com/security/cve/CVE-2011-2371
suse.com/security/cve/CVE-2011-2372
suse.com/security/cve/CVE-2011-2373
suse.com/security/cve/CVE-2011-2374
suse.com/security/cve/CVE-2011-2375
suse.com/security/cve/CVE-2011-2377
suse.com/security/cve/CVE-2011-2985
suse.com/security/cve/CVE-2011-2986
suse.com/security/cve/CVE-2011-2988
suse.com/security/cve/CVE-2011-2989
suse.com/security/cve/CVE-2011-2990
suse.com/security/cve/CVE-2011-2991
suse.com/security/cve/CVE-2011-2992
suse.com/security/cve/CVE-2011-2993
suse.com/security/cve/CVE-2011-2995
suse.com/security/cve/CVE-2011-2996
suse.com/security/cve/CVE-2011-2997
suse.com/security/cve/CVE-2011-3000
suse.com/security/cve/CVE-2011-3001
suse.com/security/cve/CVE-2011-3002
suse.com/security/cve/CVE-2011-3003
suse.com/security/cve/CVE-2011-3004
suse.com/security/cve/CVE-2011-3005
suse.com/security/cve/CVE-2011-3026
suse.com/security/cve/CVE-2011-3062
suse.com/security/cve/CVE-2011-3079
suse.com/security/cve/CVE-2011-3101
suse.com/security/cve/CVE-2011-3232
suse.com/security/cve/CVE-2011-3648
lists.opensuse.org/archives/list/[email protected]/thread/3HI2RC7AJAHY74Q6MK7GNGWU6TITB22V
Left out here: 1,883 references and the rest of 1 source description. The JSON record has them.