CVE-2021-23718 json
Server-side Request Forgery (SSRF)
published 4y ago modified 4mo ago also GHSA-6gww-qpm6-mc2g , EUVD-2021-2458
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.
Patch / fix
Is CVE-2021-23718 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- snyk.io https://snyk.io/vuln/SNYK-JS-SSRFAGENT-1584362 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | ssrf-agent | <1.0.5 |
1.0.5 |
Affected products
- n/a ssrf-agent
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/welefen/ssrf-agent/commit/9607175acd0647d821bae4e8fcc3b712aca3fd2d#diff-e727e4bdf3657fd1d798edcd6b099d6e092f8
web
-
snyk.io
/vuln/SNYK-JS-SSRFAGENT-1584362
web, exploit, third-party-advisory
-
github.com
/welefen/ssrf-agent/blob/cec2b85fe8886ad6926a247a3e059d8369ec022b/index.js%23L13
web, broken-link, third-party-advisory
-
security.netapp.com
/advisory/ntap-20211203-0005/
third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-23718
advisory
-
github.com
/welefen/ssrf-agent
package
-
security.netapp.com
/advisory/ntap-20211203-0005
web
Sources
- CVE List CVE-2021-23718
- GitHub Advisory GHSA-6gww-qpm6-mc2g
- NVD CVE-2021-23718
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