CVE-2020-23622 json
4thline cling uPnP protocol issue can lead to denial of service
published 2022-08-15 4 y ago modified 2026-06-17 4 mo ago also GHSA-c438-6f6r-pg8w , EUVD-2022-6530
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
An issue in the UPnP protocol in 4thline cling 2.0.0 through 2.1.2 allows remote attackers to cause a denial of service via an unchecked CALLBACK parameter in the request header
Patch / fix
- github.com/4thline/cling/issues/253 advisory
Exploit prediction
1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/4thline/cling/issues/253 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.fourthline.cling:cling-core | >=2.0.0, <=2.1.2 |
no fix listed |
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/4thline/cling/issues/253
web, exploit, issue-tracking, patch, third-party-advisory
-
zh-cn.tenable.com
/blog/cve-2020-12695-callstranger-vulnerability-in-universal-plug-and-play-upnp-puts-billions-of?tns_redirect=
web, not-applicable
-
nvd.nist.gov
/vuln/detail/CVE-2020-23622
advisory
-
github.com
/4thline/cling
package
Sources
- CVE List CVE-2020-23622
- GitHub Advisory GHSA-c438-6f6r-pg8w
- NVD CVE-2020-23622
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