Search criteria
3 vulnerabilities found for validator by validator
FKIE_CVE-2025-15104
Vulnerability from fkie_nvd - Published: 2026-01-16 14:15 - Updated: 2026-01-23 16:57
Severity
Summary
Nu Html Checker (validator.nu) contains a restriction bypass that allows remote attackers to make the server perform arbitrary HTTP/HTTPS requests to internal resources, including localhost services. While the validator implements hostname-based protections to block direct access to localhost and 127.0.0.1, these controls can be bypassed using DNS rebinding techniques or domains that resolve to loopback addresses.This issue affects The Nu Html Checker (vnu): latest (commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd).
References
| URL | Tags | ||
|---|---|---|---|
| help@fluidattacks.com | https://fluidattacks.com/advisories/europe | Exploit, Third Party Advisory | |
| help@fluidattacks.com | https://github.com/validator/validator | Product | |
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | https://fluidattacks.com/advisories/europe | Exploit, Third Party Advisory |
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CVE-2025-15104 (GCVE-0-2025-15104)
Vulnerability from cvelistv5 – Published: 2026-01-16 14:00 – Updated: 2026-01-16 14:30
VLAI
Title
Nu Html Checker (validator.nu) - Restriction bypass vulnerability allowing local SSRF
Summary
Nu Html Checker (validator.nu) contains a restriction bypass that allows remote attackers to make the server perform arbitrary HTTP/HTTPS requests to internal resources, including localhost services. While the validator implements hostname-based protections to block direct access to localhost and 127.0.0.1, these controls can be bypassed using DNS rebinding techniques or domains that resolve to loopback addresses.This issue affects The Nu Html Checker (vnu): latest (commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd).
Severity
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/europe | third-party-advisory |
| https://github.com/validator/validator | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Nu Html Checker | The Nu Html Checker |
Affected:
latest - commit:23f090a11bab8d0d4e698f1ffc197a4fe226a9cd
|
Credits
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CVE-2025-15104 (GCVE-0-2025-15104)
Vulnerability from nvd – Published: 2026-01-16 14:00 – Updated: 2026-01-16 14:30
VLAI
Title
Nu Html Checker (validator.nu) - Restriction bypass vulnerability allowing local SSRF
Summary
Nu Html Checker (validator.nu) contains a restriction bypass that allows remote attackers to make the server perform arbitrary HTTP/HTTPS requests to internal resources, including localhost services. While the validator implements hostname-based protections to block direct access to localhost and 127.0.0.1, these controls can be bypassed using DNS rebinding techniques or domains that resolve to loopback addresses.This issue affects The Nu Html Checker (vnu): latest (commit 23f090a11bab8d0d4e698f1ffc197a4fe226a9cd).
Severity
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/europe | third-party-advisory |
| https://github.com/validator/validator | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Nu Html Checker | The Nu Html Checker |
Affected:
latest - commit:23f090a11bab8d0d4e698f1ffc197a4fe226a9cd
|
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