What’s Vulnerable › Vulnerabilities

CVE-2023-33546

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-01 · updated 2026-06-17
• Weakness: CWE-787

Description

Janino 3.1.9 and earlier are subject to denial of service (DOS) attacks when using the expression evaluator.guess parameter name method. If the parser runs on user-supplied input, an attacker could supply content that causes the parser to crash due to a stack overflow. NOTE: this is disputed by multiple parties because Janino is not intended for use with untrusted input.

Affected products

• Janino Project Janino: through 3.1.9

References

• https://github.com/janino-compiler/janino/issues/201
• https://janino-compiler.github.io/janino/#security
• https://github.com/janino-compiler/janino/issues/201
• https://janino-compiler.github.io/janino/#security

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