CVE-2025-8267Withdrawn

ssrfcheck · Vulnerability

CVSS 3.1 8.2 HIGHCVSS 4.0 8.8 HIGHEUVD CVSS 4.0 8.8 CVSS 4.0 · [email protected] · Secondary 7.8 HIGHCVSS 3.1 · [email protected] · Secondary 8.2 HIGHCVSS 3.1 · [email protected] · Primary 5.3 MEDIUMCVSS_V3 CVSS_V4 Publisher rating HIGHFixed by ssrfcheck 1.2.0CVSS_V3 CVSS_V4 Publisher rating HIGHFixed by ssrfcheck 1.2.0KEV status unknown

Original advisory

cve-program · CVE-2025-8267

Published

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.

Read the publisher's advisory

euvd · EUVD-2025-22851

Published

Read the publisher's advisory

nvd · CVE-2025-8267

Published

Read the publisher's advisory

osv · GHSA-c2fv-2fmj-9xrx

Withdrawn

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p4hc-9pjh-55c8. This link is maintained to preserve external references. ### Original Description Versions of the package ssrfcheck below 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.

Read the publisher's advisory

osv · GHSA-p4hc-9pjh-55c8

Published

# SSRF Bypass in `ssrfcheck` - fails to classify reserved IP address space as invalid `ssrfcheck` is an npm package that serves to provide protection from SSRF by validating URLs or hostname inputs. Resources: * Project's GitHub code repository: https://github.com/felippe-regazio/ssrfcheck * Project's npm package: https://www.npmjs.com/package/ssrfcheck ## Vulnerability The `ssrfcheck` package maintains a denylist of IP addresses and ranges to check against when validating if an IP address is to be considered as safe or not. However, the IP address list used for the denylist is incomplete and misses a reserved IP address space as defined by the IANA (Internet Assigned Numbers Authority): - 224.0.0.0/4 - Multicast Practically, this reserved IP address space is used for multicast traffic and would most commonly be used for reserved local communication over network protocols such as UDP, which would make it less likely to be used in a typical SSRF attack in practice. However, such reserved IP address space shouldn't be allowed and it would be responsible of the SSRF protection package to align and conform to an agreed-upon standard of special-purposed addresses that should not be considered a valid public IP address. For reference, the popular npm packages `private-ip` and `ipaddr.js` that are highly dependent-upon to make decisions about SSRF protection and both consider the above mentioned IP address space as reserved and is not considered a valid public IP address. ## Exploit Proof of Concept 1. Install the `ssrfcheck` package: ```bash npm install ssrfcheck ``` 2. Define an `app.js` file with the programmatic API of `ssrfcheck`: ```javascript import { isSSRFSafeURL } from 'ssrfcheck'; let result result = isSSRFSafeURL('https://012.1.2.3/whatever'); console.log(result); // returns false result = isSSRFSafeURL('https://localhost:8080/whatever'); console.log(result); // returns false result = isSSRFSafeURL('https://239.255.255.250:8080/whatever'); console.log(result); // returns true - bypassed ``` ## Vulnerable versions All versions of ssrfcheck are vulnerable to this issue, up to and including to the latest version of `1.1.1`. ## Assigned CVE [CVE-2025-8267](https://nvd.nist.gov/vuln/detail/CVE-2025-8267) # Author Liran Tal

Read the publisher's advisory

Affected versions, risk and source history

Exploitation and risk

Source status

CISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.

Which CVEs have scores here?

This view includes predictions for CVE identifiers explicitly listed in public NuGet advisories. Microsoft release pages have their own prediction coverage. Check source status for the scope and latest checks.

No exploitation or prediction data is available here for these CVEs. This does not mean they are safe or unlikely to be exploited.

cve-program · CVE-2025-8267

Published

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 (M…

Source published: 28 Jul 2025 05:00:00 UTC
Source modified: 28 Jul 2025 16:01:35 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 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

CVSS 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

euvd · EUVD-2025-22851

Published

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 (M…

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jul 28, 2025, 5:00:00 AM

dateUpdated: Jul 28, 2025, 4:01:35 PM

Source published: Jul 28, 2025, 5:00:00 AM (timezone not stated)
Source modified: Jul 28, 2025, 4:01:35 PM (timezone not stated)
Saved here: 15 Nov 2026 05:41:40 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 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

nvd · CVE-2025-8267

Published

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 (M…

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-918

Original publisher date fields

published: 2025-07-28T05:16:20.673

lastModified: 2026-06-17T10:06:38.690

1 source CPE criteria · context only

cpe:2.3:a:felipperegazio:ssrf_check:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 28 Jul 2025 05:16:20 UTC
Source modified: 17 Jun 2026 10:06:38 UTC
Saved here: 25 Oct 2026 04:17:18 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 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

CVSS 3.1 · [email protected] · Secondary · 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS 3.1 · [email protected] · Primary · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

osv · GHSA-c2fv-2fmj-9xrx

Withdrawn

Duplicate Advisory: ssrfcheck has Incomplete IP Address Deny List that leads to Server-Side Request Forgery Vulnerability

Source published: 28 Jul 2025 06:30:23 UTC
Source modified: 10 Sep 2026 03:50:57 UTC
Saved here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS_V4 · 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

Publisher rating · HIGH

osv · GHSA-p4hc-9pjh-55c8

Published

ssrfcheck: SSRF Bypass Caused by Failure to Classify Reserved IP Address Space as Invalid

Source published: 5 May 2026 20:29:06 UTC
Source modified: 5 May 2026 20:56:27 UTC
Saved here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS_V4 · 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

Publisher rating · HIGH