Security readout for executives and security teams
Plain-English summary
CVE-2021-40892 describes a denial-of-service risk in validate-color v2.1.0. Crafted invalid rgb(a) color strings may cause excessive regular-expression processing. Business impact depends on whether the package handles untrusted input in exposed services. The public source bundle does not provide a CVSS score, confirmed exploit activity, or a named fixed version.
Executive priority
Prioritize if validate-color v2.1.0 is used in public-facing services that parse user-supplied color values. Otherwise, handle through dependency hygiene because severity and exploitation evidence are incomplete.
Technical view
The CVE record reports a Regular Expression Denial of Service issue in validate-color v2.1.0 when parsing crafted invalid rgb(a) strings. Available metadata lacks CWE, CPE, CVSS, and detailed affected-product entries. The issue appears input-triggered and availability-focused, but the provided sources do not establish exploitability conditions beyond crafted invalid rgb(a) input.
Likely exposure
Likely exposure is limited to applications that include validate-color v2.1.0 and process untrusted rgb(a) color strings. Exact affected product metadata is incomplete in the source bundle.
Exploitation context
The source bundle does not show CISA KEV listing, active exploitation, public exploit use, or attack prevalence. Treat exploitation status as unconfirmed.
Researcher notes
The evidence is thin: the CVE description names validate-color v2.1.0 and crafted invalid rgb(a) strings, but provides no CVSS, CWE, CPE, patch details, or confirmed exploitation. Further validation should focus on dependency presence and reachable input paths.
Mitigation direction
- Inventory projects for validate-color v2.1.0 in manifests and lockfiles.
- Check upstream maintainer guidance for a fixed or safer version.
- Avoid sending untrusted rgb(a) strings to vulnerable validation paths.
- Apply conservative input length limits around color fields.
- Ensure request timeouts protect exposed validation endpoints.
Validation and detection
- Search dependency manifests and lockfiles for validate-color v2.1.0.
- Identify routes or APIs accepting user-controlled color values.
- Confirm whether rgb(a) validation runs server-side or in shared services.
- Review logs for unusual bursts of invalid color input.
- Verify remediation against vendor guidance when available.
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
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CVE-2021-40892 mapping review
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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
- https://github.com/yetingli/SaveResults/blob/main/js/validate-color.jsCVE 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.