CVE-2025-8267 json
ssrfcheck: SSRF Bypass Caused by Failure to Classify Reserved IP Address Space as Invalid
published 2025-07-28 15 mo ago modified 2026-06-17 4 mo ago also GHSA-p4hc-9pjh-55c8 , EUVD-2025-22851
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
Versions of the package ssrfcheck before 1.2.0 are vulnerable to Server-Side Request Forgery (SSRF) due to an incomplete denylist of IP address ranges. Specifically, the package fails to classify the reserved IP address space 224.0.0.0/4 (Multicast) as invalid. This oversight allows attackers to craft requests targeting these multicast addresses.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 15 mo ago
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- security.snyk.io https://security.snyk.io/vuln/SNYK-JS-SSRFCHECK-9510756 referenced PoC, tagged "exploit" by a source, unverified
- gist.github.com https://gist.github.com/lirantal/2976840639df824cb3abe60d13c65e04 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P |
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:P |
| CNA | 4.0 | 7.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | ssrfcheck | <1.2.0 |
1.2.0 |
Affected products
- n/a ssrfcheck
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/felippe-regazio/ssrfcheck/commit/9507b49fd764f2a1a1d1e3b9ee577b7545e6950e
web, patch
-
security.snyk.io
/vuln/SNYK-JS-SSRFCHECK-9510756
web, exploit, third-party-advisory
-
gist.github.com
/lirantal/2976840639df824cb3abe60d13c65e04
web, exploit, third-party-advisory
-
github.com
/felippe-regazio/ssrfcheck/issues/5
web, issue-tracking
-
github.com
/felippe-regazio/ssrfcheck/security/advisories/GHSA-p4hc-9pjh-55c8
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-8267
advisory
-
github.com
/felippe-regazio/ssrfcheck
package
Sources
- CVE List CVE-2025-8267
- GitHub Advisory GHSA-p4hc-9pjh-55c8
- NVD CVE-2025-8267
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