CVE-2020-7693
Denial of Service (DoS)
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
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
- Low
Exploit likelihood
What each source reports
CVE List Score used
Denial of Service (DoS)
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
- Record
CVE-2020-7693- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O - Updated
- 2026-11-02
EUVDEUVD-2021-0811
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
- Record
EUVD-2021-0811- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c9g6-9335-x697
Improper Input Validation in SocksJS-Node
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
- Record
GHSA-c9g6-9335-x697- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
- Record
CVE-2020-7693- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-755
- Updated
- 2026-11-02
OSV
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
- Record
CVE-2020-7693- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSVGHSA-c9g6-9335-x697
Improper Input Validation in SocksJS-Node
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
- Record
GHSA-c9g6-9335-x697- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVCLSA-2026-1776731780 No score
TuxCare security update for sockjs (1 CVE)
TuxCare rebuilt sockjs to address 1 CVE. Fixed in 0.3.19-tuxcare.1.
- Record
CLSA-2026-1776731780- Updated
- 2026-11-02
OSVCLSA-2026-1784856033 No score
TuxCare security update for sockjs (1 CVE)
TuxCare rebuilt sockjs to address 1 CVE. Fixed in 0.3.18-tuxcare.1.
- Record
CLSA-2026-1784856033- Updated
- 2026-11-02
Affected products
Affected packages
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | andsnw/sockjs-dos-py | 2020-07-03 |
| PoC in GitHub | thewindghost/CVE-2020-7693 | 2026-01-13 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-7693 is a medium vulnerability (CVSS 5.3) in Sockjs Project Sockjs, published July 9, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.98%, the 92nd percentile. Fixed in sockjs 0.3.20.
References
snyk.io/vuln/SNYK-JS-SOCKJS-575261
github.com/sockjs/sockjs-node/issues/252
nvd.nist.gov/vuln/detail/CVE-2020-7693
npmjs.com/package/sockjs