Security readout for executives and security teams
Plain-English summary
Cassandra Web 0.5.0 has a directory traversal flaw that can let an unauthenticated remote attacker read files from the server. The stated impact includes exposure of sensitive system files and Cassandra credentials. This is high business risk where Cassandra Web is internet-accessible or reachable from untrusted networks.
Executive priority
Prioritize within normal emergency change processes if Cassandra Web 0.5.0 is deployed, especially if remotely reachable. The main business concern is credential and file disclosure that could enable follow-on compromise of Cassandra environments.
Technical view
The issue is CWE-22 path traversal in avalanche123 Cassandra Web 0.5.0. Sources state disabled Rack::Protection enables arbitrary file read without authentication. CVSS is 8.7 under CVSS 4.0 with network attack vector, low complexity, no privileges, and high confidentiality impact.
Likely exposure
Exposure is limited to organizations running Cassandra Web version 0.5.0. Risk is highest if the web interface is exposed to the internet, partner networks, or broad internal networks. The source bundle does not identify other affected versions or a confirmed fixed release.
Exploitation context
A public ExploitDB entry is referenced, so exploit knowledge is public. The source bundle does not show CISA KEV listing or cite active exploitation in the wild. Treat the issue as readily testable by attackers, but do not claim confirmed active exploitation from these sources.
Researcher notes
Evidence supports arbitrary file read in Cassandra Web 0.5.0 with public exploit reference. No KEV signal is present in the bundle. No authoritative fixed version is provided, so remediation guidance should be based on vendor/project updates, exposure reduction, retirement, and credential rotation.
Mitigation direction
- Identify any Cassandra Web 0.5.0 deployments and owners.
- Remove internet exposure for Cassandra Web immediately.
- Restrict access to trusted administrative networks only.
- Check the project repository and advisory sources for vendor guidance.
- Retire Cassandra Web if no supported fixed version is available.
- Rotate Cassandra and system credentials if exposure is suspected.
Validation and detection
- Inventory RubyGems and application deployments for cassandra-web 0.5.0.
- Review external attack surface for exposed Cassandra Web interfaces.
- Check access logs for suspicious traversal-like file requests.
- Confirm administrative interfaces require network-level access controls.
- Verify whether sensitive credentials are stored on affected hosts.
Public sources used
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.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-36939 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
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49362CVE reference · exploit
- Cassandra Web GitHub RepositoryCVE reference · product
- Cassandra Web RubyGems PackageCVE reference · product
- VulnCheck Advisory: Cassandra Web 0.5.0 - Remote File ReadCVE reference · third-party-advisory
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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.