CVE-2014-4994
Gyazo allows local users to write arbitrary files
lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.
- Record
CVE-2014-4994- CVSS 3.0
- 5.5 Medium
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.
- Record
CVE-2014-4994- Updated
- 2026-11-02
EUVDEUVD-2018-0153 No score
lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.
- Record
EUVD-2018-0153- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6x45-86q6-rcmr
Gyazo allows local users to write arbitrary files
lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.
- Record
GHSA-6x45-86q6-rcmr- CVSS 3.0
- 5.5 Medium
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVGHSA-6x45-86q6-rcmr
Gyazo allows local users to write arbitrary files
lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.
- Record
GHSA-6x45-86q6-rcmr- CVSS 3.0
- 5.5 Medium
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2014-4994 is a medium vulnerability (CVSS 5.5) in Gyazo Project Gyazo, published January 10, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. Fixed in gyazo 2.0.0.
References
openwall.com/lists/oss-security/2014/07/17/5
vapid.dhs.org/advisories/gyazo-1.0.0.html
nvd.nist.gov/vuln/detail/CVE-2014-4994
github.com/rubysec/ruby-advisory-db/blob/master/gems/gyazo/CVE-2014-4994.yml
web.archive.org/web/20200229061943/http://www.vapid.dhs.org/advisories/gyazo-1.0.0.html