CVE-2021-23803
There is a way to bypass allowFunctions that will affect the security of the application.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
This affects the package latte/latte before 2.10.6. There is a way to bypass allowFunctions that will affect the security of the application. When the template is set to allow/disallow the use of certain functions, adding control characters (x00-x08) after the function will bypass these restrictions.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.63% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- nette/latte
- Source
- report@snyk.io
EPSS 1.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/nette/latte/commit/227c86eda9a8a6d060ea8501923e768b6d992210Patch, Third Party Advisory
- https://github.com/nette/latte/issues/279Exploit, Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-PHP-LATTELATTE-1932226Exploit, Patch, Third Party Advisory
- https://github.com/nette/latte/commit/227c86eda9a8a6d060ea8501923e768b6d992210Patch, Third Party Advisory
- https://github.com/nette/latte/issues/279Exploit, Issue Tracking, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-PHP-LATTELATTE-1932226Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.