GHSL-2020-290: Regular Expression Denial of Service (ReDoS) in foundation-sites
Priority HIGH 77CWE-1333Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1333.
Summary
Foundation is a front-end framework. Versions 6.3.3 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any fixes are available.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00539 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| foundation | foundation-sites | up to 6.6.3 | — | No fix listed | CNA |
| — | foundation-sites (npm) | up to 6.3.3 | — | No fix listed | GHSA-p8pc-3f7w-jr5q |
- foundation-sites Vendorfoundation Affected up to 6.6.3 Fixed in — No fix listed CNA
- foundation-sites (npm) Vendor— Affected up to 6.3.3 Fixed in — No fix listed GHSA-p8pc-3f7w-jr5q
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:foundation:foundation:*:*:*:*:*:*:*:* | up to 6.3.3 | Vulnerable | foundation |
- cpe:2.3:a:foundation:foundation:*:*:*:*:*:*:*:* Versions up to 6.3.3 Vulnerable ·foundation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-26304
- 2026-10-03 Alias added: GHSA-p8pc-3f7w-jr5q
References
Advisory 3
Sources
- CVE-2020-26304 · CVE Program
- CVE-2020-26304 · NVD
- FIRST EPSS
- GHSA-p8pc-3f7w-jr5q · GitHub Advisory Database · CC BY 4.0
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