Security readout for executives and security teams
Plain-English summary
This flaw can let an attacker crash some Go applications by sending XML that triggers excessive recursion during parsing. The business impact is denial of service, not data theft or code execution, based on the provided sources.
Executive priority
Treat as a high-priority availability issue for internet-facing or partner-facing Go services that parse XML. Prioritize rebuilds with fixed Go versions where XML input can be attacker-controlled.
Technical view
CVE-2022-30633 is uncontrolled recursion in Go's encoding/xml.Unmarshal before Go 1.17.12 and 1.18.4. It affects unmarshalling XML into a Go struct with a nested field using the `any` tag, causing stack exhaustion and a panic.
Likely exposure
Exposure is most likely in Go services, APIs, workers, or tooling that parse untrusted XML using encoding/xml and the affected struct pattern. Systems that do not accept XML or do not use Go's encoding/xml are less likely exposed.
Exploitation context
The bundle marks KEV as false, and no provided source states active exploitation. The CVSS vector indicates remote, unauthenticated, low-complexity denial of service, but availability is the only listed impact.
Researcher notes
The affected condition is narrower than all XML parsing: the sources identify Unmarshal into a struct with a nested field using `any`. Validate reachability before escalating, and avoid assuming code execution or confidentiality impact.
Mitigation direction
- Upgrade affected builds to Go 1.17.12, Go 1.18.4, or a later supported Go release.
- Rebuild and redeploy Go binaries after upgrading the toolchain.
- Review services that accept XML from users, partners, queues, or files.
- Check vendor guidance if using embedded Go runtimes or packaged appliances.
- Where upgrade is delayed, limit exposure of untrusted XML parsing paths.
Validation and detection
- Inventory Go binaries and confirm the Go toolchain version used to build each one.
- Search code for encoding/xml Unmarshal on externally supplied XML.
- Review XML struct definitions for nested fields using the `any` tag.
- Confirm deployed binaries were rebuilt after the fixed Go version was installed.
- Check monitoring for unexplained Go panics in XML parsing paths.
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-674: Exact CWE lookup
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Open ATT&CK lookupCVE-2022-30633 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:N/I:N/A:H
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:N/I:N/A:H3.93.6Primary 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:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://go.dev/cl/417061CVE reference
- https://go.googlesource.com/go/+/c4c1993fd2a5b26fe45c09592af6d3388a3b2e08CVE reference
- https://go.dev/issue/53611CVE reference
- https://groups.google.com/g/golang-announce/c/nqrv9fbR0zECVE reference
- https://pkg.go.dev/vuln/GO-2022-0523CVE reference
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.
Uncontrolled Recursion
Uncontrolled Recursion represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.