CRITICAL
Prototype Pollution
Published Jul 30, 2020
9.8
CRITICALCVSS 3.1
EPSS 4.76%
Description
This affects the package express-fileupload before 1.1.8. If the parseNested option is enabled, sending a corrupt HTTP request can lead to denial of service or arbitrary code execution.
Affected products
- Vendor n/a Product Express-Fileupload Defaultn/a
- Version unspecifiedStatusaffectedConstraints<1.1.8
- 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 | Express-Fileupload | n/a |
|
Configuration 1
- < 1.1.8
No data.
No Red Hat product state for this CVE.
express-fileupload
npm
Introduced 0 Fixed 1.1.9
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | express-fileupload | 0 | 1.1.9 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (CVE.org) ▾
7.5 HIGH CVE.org
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.76% 0.04762
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.04762
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 4.76% (0.04762) | 91.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.67% (0.04672) | 90.56th | v5 (v2026.06.15) |
| May 16, 2026 | 2.27% (0.02269) | 84.81th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.09% (0.04089) | 87.50th | v4 (v2025.03.14) |
| Mar 29, 2025 | 14.67% (0.14675) | 90.83th | v4 (v2025.03.14) |
| Mar 28, 2025 | 2.27% (0.02269) | 83.16th | v4 (v2025.03.14) |
| Mar 27, 2025 | 14.67% (0.14675) | 93.55th | v4 (v2025.03.14) |
| Mar 20, 2025 | 2.27% (0.02269) | 83.22th | v4 (v2025.03.14) |
| Mar 19, 2025 | 14.67% (0.14675) | 93.67th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.86% (0.01859) | 88.54th | v3 (v2023.03.01) |
| Mar 13, 2024 | 1.86% (0.01859) | 88.05th | v3 (v2023.03.01) |
| Dec 3, 2023 | 1.53% (0.01527) | 85.54th | v3 (v2023.03.01) |
| Jul 6, 2023 | 0.90% (0.00897) | 80.49th | v3 (v2023.03.01) |
| Jun 22, 2023 | 0.85% (0.00850) | 79.84th | v3 (v2023.03.01) |
| Apr 15, 2023 | 0.61% (0.00614) | 75.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.57% (0.00574) | 74.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 20.78% (0.20776) | 96.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 20.78% (0.20776) | 96.20th | v2 (v2022.01.01) |
| Feb 4, 2022 | 20.78% (0.20776) | 94.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.64% (0.07644) | 84.07th | v1 |
| Jan 6, 2022 | 7.64% (0.07644) | 83.92th | v1 |
| Sep 1, 2021 | 1.81% (0.01811) | 74.42th | v1 |
| Apr 14, 2021 | 1.81% (0.01811) | 0.00th | v1 |
References (7)
- https://github.com/advisories/GHSA-9wcg-jrwf-8gg7 Advisory
- https://github.com/richardgirges/express-fileupload/commit/db495357d7557ceb5c034de91a7a574bd12f9b9f
- https://github.com/richardgirges/express-fileupload/issues/236 x_refsource_MISCExploitThird Party Advisory
- https://github.com/richardgirges/express-fileupload/pull/237
- https://nvd.nist.gov/vuln/detail/CVE-2020-7699
- https://security.netapp.com/advisory/ntap-20200821-0003/ x_refsource_CONFIRMThird Party Advisory
- https://snyk.io/vuln/SNYK-JS-EXPRESSFILEUPLOAD-595969 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-9wcg-jrwf-8gg7 | Advisory | |
| https://github.com/richardgirges/express-fileupload/commit/db495357d7557ceb5c034de91a7a574bd12f9b9f | ||
| https://github.com/richardgirges/express-fileupload/issues/236 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/richardgirges/express-fileupload/pull/237 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2020-7699 | ||
| https://security.netapp.com/advisory/ntap-20200821-0003/ | x_refsource_CONFIRMThird Party Advisory | |
| https://snyk.io/vuln/SNYK-JS-EXPRESSFILEUPLOAD-595969 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner snyk
Published Jul 30, 2020
Updated Sep 17, 2024
Reserved Jan 21, 2020
Link CVE-2020-7699
CISA Vulnrichment
GHSA-9WCG-JRWF-8GG7 Updated n/a