Weak Nonce Detected in Content Security Policy (CSP) Declaration
Summary#
Invicti detected that a weak nonce value used in CSP declaration.
Impact#
An attacker can carry out a successful Cross-site Scripting attack by predicting a valid nonce by exploiting this weakness.
Remediation#
The application must generate a fresh value for the nonce-value directive at random and independently each time it transmits a policy. The value should be at least 128 bits long and should be generated using a cryptographically secure random number generator.
Classifications#
Further Reading#
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