Regular expression denial of service (ReDoS) in html-parse-stringify
Priority LOW 28CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
This affects the package html-parse-stringify before 2.0.1; all versions of package html-parse-stringify2. Sending certain input could cause one of the regular expressions that is used for parsing to backtrack, freezing the process.
Why it matters now
EPSS 0.02129 82nd percentileScored 2026-11-07
Fix Partial html-parse-stringify: 2.0.1html-parse-stringify (npm): 2.0.1Red Hat: 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | html-parse-stringify | before 2.0.1 | 2.0.1 | Patch available | CNA |
| — | html-parse-stringify2 | all versions | — | No fix listed | CNA |
| — | html-parse-stringify (npm) | before 2.0.1 | 2.0.1 | Patch available | GHSA-545q-3fg6-48m7 |
| — | html-parse-stringify2 (npm) | up to 2.0.1 | — | No fix listed | GHSA-545q-3fg6-48m7 |
- html-parse-stringify Vendor— Affected before 2.0.1 Fixed in 2.0.1 Patch available CNA
- html-parse-stringify2 Vendor— Affected all versions Fixed in — No fix listed CNA
- html-parse-stringify (npm) Vendor— Affected before 2.0.1 Fixed in 2.0.1 Patch available GHSA-545q-3fg6-48m7
- html-parse-stringify2 (npm) Vendor— Affected up to 2.0.1 Fixed in — No fix listed GHSA-545q-3fg6-48m7
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:html-parse-stringify_project:html-parse-stringify:*:*:*:*:*:node.js:*:* | before 2.0.1 | Vulnerable | Html-parse-stringify Project |
- cpe:2.3:a:html-parse-stringify_project:html-parse-stringify:*:*:*:*:*:node.js:*:* Versions before 2.0.1 Vulnerable ·Html-parse-stringify Project
Remediation
- Fix · CNA html-parse-stringify Fixed in 2.0.1
- Fix · GHSA-545q-3fg6-48m7 html-parse-stringify (npm) Fixed in 2.0.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
Not affected: 1 product
- Red Hat Advanced Cluster Management for Kubernetes 2
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23346
- 2026-10-03 Alias added: GHSA-545q-3fg6-48m7
References
Advisory 3
Sources
- CVE-2021-23346 · CVE Program
- CVE-2021-23346 · NVD
- FIRST EPSS
- GHSA-545q-3fg6-48m7 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-23346 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences