Security readout for executives and security teams
Plain-English summary
CVE-2022-40082 is a path traversal flaw reported in Hertz v0.3.0 ws path normalization. If exposed in a deployed service, an unauthenticated remote user could potentially read files the service can access. The source bundle does not identify broad affected product metadata or a fixed release version.
Executive priority
Treat as high priority for internet-facing services using Hertz v0.3.0. The main business risk is unauthorized disclosure of sensitive files, not service takeover. Prioritize inventory first because affected-product metadata is incomplete in the CVE bundle.
Technical view
The issue is mapped to CWE-22 and attributed to Hertz v0.3.0 ws normalizePath handling. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges, no user interaction, with high confidentiality impact only. Public references are a GitHub issue and pull request, but the bundle does not include exploit details or fixed-version metadata.
Likely exposure
Likely exposure is limited to services using Hertz v0.3.0 ws code paths affected by normalizePath. Internet-facing deployments are higher priority. Dependency manifests and runtime routes should be checked because the CVE affected metadata lists no concrete CPEs or vendor/product identifiers.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates remote unauthenticated exploitability with confidentiality impact, but no public exploit status or attack prevalence is provided here.
Researcher notes
Evidence is sparse: the CVE names Hertz v0.3.0 ws and normalizePath, assigns CWE-22, and references GitHub issue #228 and PR #229. Do not infer affected versions beyond the stated version without checking upstream project history and release notes.
Mitigation direction
- Check CloudWeGo Hertz guidance, issue #228, and pull request #229 for the vendor-corrected fix.
- Upgrade away from Hertz v0.3.0 if the vendor identifies a fixed release.
- Restrict public access to affected ws routes until remediation is confirmed.
- Review service file access permissions to limit sensitive file exposure impact.
Validation and detection
- Inventory applications and containers for Hertz v0.3.0 dependency usage.
- Confirm whether ws routes use normalizePath-related file handling.
- Review access logs for suspicious traversal-like path patterns around exposed endpoints.
- Verify the deployed dependency includes the upstream correction referenced by PR #229.
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 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-2022-40082 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/cloudwego/hertz/issues/228CVE reference · x_refsource_MISC
- https://github.com/cloudwego/hertz/pull/229CVE reference · x_refsource_MISC
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.