In affected versions of WordPress, a vulnerability in the stats() method of class-wp-object-cache.php can be exploited to execute cross-site scripting (XSS) attacks. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityHigh
RequirementsPresent
PrivilegesLow
User InteractionActive
Threat
Exploit MaturityPoC
Vulnerable System
ConfidentialityHigh
IntegrityNone
AvailabilityNone
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | PoC | E: U→P | 1.9 → 4.7 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 1.9 |
Affected Software
| Vendor | Product | Version |
|---|
| debian | debian_linux | 10.0 |
| debian | debian_linux | 8.0 |
| debian | debian_linux | 9.0 |
| WordPress | WordPress | ≥ 4.3.0, < 4.3.23 |
| wordpress | wordpress | ≥ 3.8, < 3.8.33 |
| WordPress | WordPress | ≥ 5.3.0, < 5.3.3 |
| wordpress | wordpress | ≥ 4.9, < 4.9.14 |
| WordPress | WordPress | ≥ 4.2.0, < 4.2.27 |
| wordpress | wordpress | ≥ 3.9, < 3.9.31 |
| WordPress | WordPress | ≥ 5.2.0, < 5.2.6 |
| wordpress | wordpress | ≥ 5.0, < 5.0.9 |
| WordPress | WordPress | ≥ 4.1.0, < 4.1.30 |
| wordpress | wordpress | ≥ 4.0, < 4.0.30 |
| WordPress | WordPress | ≥ 5.1.0, < 5.1.5 |
| wordpress | wordpress | ≥ 5.1, < 5.1.5 |
| WordPress | WordPress | ≥ 4.0.0, < 4.0.30 |
| wordpress | wordpress | ≥ 4.1, < 4.1.30 |
| WordPress | WordPress | ≥ 5.0.0, < 5.0.9 |
| wordpress | wordpress | ≥ 5.2, < 5.2.6 |
| WordPress | WordPress | ≥ 3.9.0, < 3.9.31 |
| wordpress | wordpress | ≥ 4.2, < 4.2.27 |
| WordPress | WordPress | ≥ 4.9.0, < 4.9.14 |
| wordpress | wordpress | ≥ 5.3, < 5.3.3 |
| WordPress | WordPress | ≥ 3.8.0, < 3.8.33 |
| wordpress | wordpress | ≥ 4.3, < 4.3.23 |
| WordPress | WordPress | ≥ 4.8.0, < 4.8.13 |
| WordPress | WordPress | ≥ 3.7.0, < 3.7.33 |
| wordpress | wordpress | ≥ 4.4, < 4.4.22 |
| WordPress | WordPress | ≥ 4.7.0, < 4.7.17 |
| wordpress | wordpress | ≥ 4.5, < 4.5.21 |
| WordPress | WordPress | ≥ 4.6.0, < 4.6.18 |
| wordpress | wordpress | ≥ 4.6, < 4.6.18 |
| WordPress | WordPress | ≥ 4.5.0, < 4.5.21 |
| wordpress | wordpress | ≥ 4.7, < 4.7.17 |
| WordPress | WordPress | ≥ 4.4.0, < 4.4.22 |
| wordpress | wordpress | ≥ 3.7, < 3.7.33 |
| WordPress | WordPress | ≥ 5.4.0, < 5.4.1 |
| wordpress | wordpress | ≥ 4.8, < 4.8.13 |
| wordpress | wordpress | 5.4 |
Published: 2020-04-30
