CVE-2020-19003 json
Verification check bypass in Gate One
published 2021-10-06 5 y ago modified 2026-06-17 4 mo ago also GHSA-q6j2-g8qf-wvf7 , PYSEC-2021-423 , EUVD-2021-0090
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
An issue in Gate One 1.2.0 allows attackers to bypass to the verification check done by the origins list and connect to Gate One instances used by hosts not on the origins list.
Exploit prediction
0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/liftoff/GateOne/issues/728 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | gateone | <=1.2.0 all versions |
no fix listed |
Classification
- Weakness
-
- CWE-290 Authentication Bypass by Spoofing
References
-
github.com
/liftoff/GateOne/issues/728
web, exploit, issue-tracking, third-party-advisory, report
-
cwe.mitre.org
/data/definitions/290.html
technical-description
-
nvd.nist.gov
/vuln/detail/CVE-2020-19003
advisory
-
github.com
/advisories/GHSA-q6j2-g8qf-wvf7
advisory
-
github.com
/liftoff/GateOne
package
-
github.com
/pypa/advisory-database/tree/main/vulns/gateone/PYSEC-2021-423.yaml
web
Sources
- CVE List CVE-2020-19003
- GitHub Advisory GHSA-q6j2-g8qf-wvf7
- NVD CVE-2020-19003
- OSV PYSEC-2021-423
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.