CVE-2019-11879
CVE-2019-11879 is a medium-severity vulnerability in Ruby-lang Webrick with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 2.1
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Ruby-lang Webrick
- Published:
- Last modified:
Description
The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory. NOTE: The vendor states that this is analogous to Options FollowSymlinks in the Apache HTTP Server, and therefore it is "not a problem.
Frequently asked questions
- What is CVE-2019-11879?
- The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory. NOTE: The vendor states that this is analogous to Options FollowSymlinks in the Apache HTTP Server, and therefore it is "not a problem.
- How severe is CVE-2019-11879?
- CVE-2019-11879 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2019-11879 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-11879?
- CVE-2019-11879 affects Ruby-lang Webrick. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-11879?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-11879 published?
- CVE-2019-11879 was published on 2019-05-10 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:ruby-lang:webrick:1.4.2:*:*:*:*:ruby:*:*
More vulnerabilities in Ruby-lang Webrick
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- CVE-2009-4492 — High (CVSS 7.5): WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel…
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All CVEs affecting Ruby-lang Webrick →
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