Security readout for executives and security teams
This is a stored cross-site scripting issue in RubyGems’ gem server pages. A malicious gem’s homepage metadata could run script in a user’s browser when that user views the gem on a vulnerable server. The sources do not show active exploitation or CVSS scoring. Exposure is most likely where organizations run RubyGems gem server functionality with old Ruby or RubyGems packages, especially internal developer gem mirrors or legacy distro packages. Standard Ruby applications are not necessarily exposed unless they use the vulnerable gem server display path. Treat as a targeted legacy platform risk, not a broad emergency. Prioritize patching internet-accessible or shared internal gem servers because developer browsers and trusted sessions may be exposed if malicious gem metadata is viewed. Mitigation focus: Upgrade RubyGems to 2.7.6 or a vendor-patched package.; Apply relevant Debian, Ubuntu, Red Hat, or SUSE security updates.; Restrict gem server access until affected instances are patched..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-1000078 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- DSA-4219CVE reference · vendor-advisory, x_refsource_DEBIAN
- USN-3621-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- RHSA-2018:3729CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2018:3730CVE reference · vendor-advisory, x_refsource_REDHAT
- [debian-lts-announce] 20180423 [SECURITY] [DLA 1358-1] ruby1.9.1 security updateCVE reference · mailing-list, x_refsource_MLIST
- RHSA-2018:3731CVE reference · vendor-advisory, x_refsource_REDHAT
- [debian-lts-announce] 20180402 [SECURITY] [DLA 1337-1] jruby security updateCVE reference · mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security updateCVE reference · mailing-list, x_refsource_MLIST
- DSA-4259CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://github.com/rubygems/rubygems/commit/66a28b9275551384fdab45f3591a82d6b59952cbCVE reference · x_refsource_MISC
- [debian-lts-announce] 20180401 [SECURITY] [DLA 1336-1] rubygems security updateCVE reference · mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20190520 [SECURITY] [DLA 1796-1] jruby security updateCVE reference · mailing-list, x_refsource_MLIST
- RHSA-2019:2028CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2020:0542CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2020:0591CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2020:0663CVE reference · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.