Regular Expression Denial of Service (ReDoS)
Published Mar 22, 2021
7.5
HIGHCVSS 3.1
EPSS 1.50%
Description
This affects the package es6-crawler-detect before 3.1.3. No limitation of user agent string length supplied to regex operators.
Affected products
- Vendor n/a Product Es6-Crawler-Detect Defaultn/a
- Version unspecifiedStatusaffectedConstraints<3.1.3
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Es6-Crawler-Detect | n/a |
|
- < 3.1.3
No data.
No Red Hat product state for this CVE.
es6-crawler-detect
npm
Introduced 0 Fixed 3.1.3
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | es6-crawler-detect | 0 | 3.1.3 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (GHSA) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.50% (0.01498) | 73.35th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.50% (0.01498) | 73.09th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.12% (0.00117) | 46.01th | v3 (v2023.03.01) |
| Dec 6, 2023 | 0.12% (0.00117) | 45.28th | v3 (v2023.03.01) |
| Oct 27, 2023 | 0.10% (0.00102) | 41.54th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00088) | 36.05th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (4)
- https://github.com/JefferyHus/es6-crawler-detect/pull/27 x_refsource_MISCPatchThird Party Advisory
- https://github.com/advisories/GHSA-jxg6-fhwc-9v9c Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-28501
- https://snyk.io/vuln/SNYK-JS-ES6CRAWLERDETECT-1051529 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/JefferyHus/es6-crawler-detect/pull/27 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/advisories/GHSA-jxg6-fhwc-9v9c | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2020-28501 | ||
| https://snyk.io/vuln/SNYK-JS-ES6CRAWLERDETECT-1051529 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.