In PHP versions 7.3.x below 7.3.26, 7.4.x below 7.4.14 and 8.0.0, when validating URL with functions like filter_var($url, FILTER_VALIDATE_URL), PHP will accept an URL with invalid password as valid URL. This may lead to functions that rely on URL being valid to mis-parse the URL and produce wrong data as components of the URL.
An official patch is available. Apply the patch as soon as possible.
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesNone
User InteractionNone
Threat
Exploit MaturityPoC
Vulnerable System
ConfidentialityLow
IntegrityNone
AvailabilityNone
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Patch StatusOfficial Patch
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | PoC | E: U→P | 1.7 → 2.9 |
| 2026-07-21 | nvd | patch: Unavailable→Official Patch | 1.7 → 1.7 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 1.7 |
Affected Software
| Vendor | Product | Version |
|---|
| debian | debian_linux | 10.0 |
| debian | debian_linux | 9.0 |
| netapp | clustered_data_ontap | All versions |
| php | php | ≥ 7.3.0, < 7.3.26 |
| php | php | ≥ 7.4.0, < 7.4.14 |
| php | php | ≥ 8.0.0, < 8.0.1 |
| PHP Group | PHP | ≥ 7.3, < 7.3.26 |
| PHP Group | PHP | ≥ 7.4, < 7.4.14 |
| PHP Group | PHP | ≥ 8.0.X, < 8.0.1 |
Published: 2021-02-15
