CVE-2021-27405 json
Regular expression Denial of Service in @progfay/scrapbox-parser
published 2021-02-19 5 y ago modified 2026-06-17 4 mo ago also GHSA-9fhw-r42p-5c7r , EUVD-2021-0640
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
A ReDoS (regular expression denial of service) flaw was found in the @progfay/scrapbox-parser package before 6.0.3 for Node.js.
Patch / fix
- npm @progfay/scrapbox-parser 6.0.3, 7.0.2
- scrapbox-parser_project scrapbox-parser 6.0.3
- github.com/progfay/scrapbox-parser#519 pull request
- github.com/progfay/scrapbox-parser#539 pull request
- github.com/progfay/scrapbox-parser#540 pull request
Exploit prediction
1.76% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @progfay/scrapbox-parser | <6.0.3 >=7.0.0, <7.0.2 |
6.0.3 7.0.2 |
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/progfay/scrapbox-parser/pull/519
web, patch, third-party-advisory
-
github.com
/progfay/scrapbox-parser/pull/539
web, patch, third-party-advisory
-
github.com
/progfay/scrapbox-parser/pull/540
web, patch, third-party-advisory
-
security.netapp.com
/advisory/ntap-20210326-0002/
third-party-advisory
-
github.com
/progfay/scrapbox-parser/security/advisories/GHSA-9fhw-r42p-5c7r
web
-
nvd.nist.gov
/vuln/detail/CVE-2021-27405
advisory
-
security.netapp.com
/advisory/ntap-20210326-0002
web
Sources
- CVE List CVE-2021-27405
- GitHub Advisory GHSA-9fhw-r42p-5c7r
- NVD CVE-2021-27405
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