VulnerabilityModified
CVE-2021-29440
Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages.
HIGH 7.2EPSS 30.6%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 30.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
Grav is a file based Web-platform. Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance. The issue was addressed in version 1.7.11.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 30.62% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- getgrav/grav
- Source
- security-advisories@github.com
References
- http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilitiesExploit, Third Party Advisory
- https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxcThird Party Advisory
- https://packagist.org/packages/getgrav/gravProduct, Third Party Advisory
- http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilitiesExploit, Third Party Advisory
- https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxcThird Party Advisory
- https://packagist.org/packages/getgrav/gravProduct, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.