CVE-2020-7793
Regular Expression Denial of Service (ReDoS)
CVE-2020-7793 is a high vulnerability (CVSS 7.5) in Ua-parser-js Project Ua-parser-js, published December 11, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.92%, the 90th percentile. Fixed in ua-parser-js 0.7.23.
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Regular Expression Denial of Service (ReDoS)
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
CVE-2020-7793- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C - Updated
- 2026-11-02
EUVDEUVD-2022-0786
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
EUVD-2022-0786- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-394c-5j6w-4xmx
ua-parser-js Regular Expression Denial of Service vulnerability
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
GHSA-394c-5j6w-4xmx- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
NVD
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
CVE-2020-7793- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
OSV
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
CVE-2020-7793- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-7793
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
DEBIAN-CVE-2020-7793- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVGHSA-394c-5j6w-4xmx
ua-parser-js Regular Expression Denial of Service vulnerability
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
GHSA-394c-5j6w-4xmx- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-7793
The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
- Record
UBUNTU-CVE-2020-7793- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVCLSA-2026-1774311649 No score
TuxCare security update for ua-parser-js (3 CVEs)
TuxCare rebuilt ua-parser-js to address 3 CVEs. Fixed in 0.7.21-tuxcare.1.
- Record
CLSA-2026-1774311649- Updated
- 2026-11-02
OSVCLSA-2026-1784596325 No score
TuxCare security update for ua-parser-js (2 CVEs)
TuxCare rebuilt ua-parser-js to address 2 CVEs. Fixed in 0.7.22-tuxcare.1.
- Record
CLSA-2026-1784596325- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ua-parser-jsnpm |
before 0.7.23 | 0.7.23 |
ua-parser-jsTuxCare:npm |
0.7.21-tuxcare.0 up to 0.7.21-tuxcare.1, plus listed versions 0.7.21 |
0.7.21-tuxcare.1 |
ua-parser-jsTuxCare:npm |
0.7.22-tuxcare.0 up to 0.7.22-tuxcare.1, plus listed versions 0.7.22 |
0.7.22-tuxcare.1 |
node-ua-parser-jsDebian:12 |
before 0.7.23+ds-1 | 0.7.23+ds-1 |
node-ua-parser-jsDebian:13 |
before 0.7.23+ds-1 | 0.7.23+ds-1 |
node-ua-parser-jsDebian:14 |
before 0.7.23+ds-1 | 0.7.23+ds-1 |
node-ua-parser-jsUbuntu:18.04:LTS |
All versions, plus listed versions 0.7.14-1 |
None known |
node-ua-parser-jsUbuntu:20.04:LTS |
All versions, plus listed versions 0.7.14-1 |
None known |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases, products, published | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
snyk.io/vuln/SNYK-JS-UAPARSERJS-1023599
github.com/faisalman/ua-parser-js/commit/6d1f26df051ba681463ef109d36c9cf0f7e32b18
cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
nvd.nist.gov/vuln/detail/CVE-2020-7793