Grav up to 2.0.6 GravExtension.php mediaDirFunc path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k3.24

Summaryinfo

A vulnerability was found in Grav up to 2.0.6. It has been classified as problematic. This affects the function mediaDirFunc of the file GravExtension.php. The manipulation leads to path traversal. This vulnerability is traded as CVE-2026-78851. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Grav up to 2.0.6 and classified as problematic. This issue affects the function mediaDirFunc of the file GravExtension.php. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

Directory Traversal vulnerability in Grav CMS 2.0.3 through 2.0.6 allows a remote attacker to obtain sensitive information via the GravExtension.php and the mediaDirFunc method.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-78851 since 08/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/15/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

By approaching the search of inurl:GravExtension.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-102184). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/25/2026 CVE reserved
10/15/2026 +51 days Advisory disclosed
10/15/2026 +0 days VulDB entry created
10/15/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-78851 (🔒)
GCVE (CVE): GCVE-0-2026-78851
GCVE (VulDB): GCVE-100-420719
EUVD: 🔒

Entryinfo

Created: 10/15/2026 18:37
Updated: 10/15/2026 19:25
Changes: 10/15/2026 18:37 (53), 10/15/2026 19:25 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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