CVE-2026-42608

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Source

https://cve.org/CVERecord?id=CVE-2026-42608

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42608.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-42608

Aliases

GHSA-hmcx-ch82-3fv2

Published

2026-05-11T15:02:15.956Z

Modified

2026-07-08T08:13:26.637260374Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator

Summary

Grav: Unauthenticated Path Traversal & Arbitrary File Write in FormFlash component.

Details

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, there is a Path Traversal vulnerability within the FormFlash core component. By manipulating the session_id (passed as __form-flash-id in POST requests), an unauthenticated attacker can traverse the filesystem to create arbitrary directories and write an index.yaml file containing attacker-controlled data. This vulnerability can lead to unauthorized modification of application behavior, potential data integrity issues, and service disruption in production environments. This vulnerability is fixed in 2.0.0-beta.2.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42608.json",
    "cwe_ids": [
        "CWE-22"
    ],
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/getgrav/grav

Affected ranges

Type

GIT

Repo

https://github.com/getgrav/grav

Events

Introduced

Fixed

3077b04b220318883ed34b6ae2a6cd0f25dba92e

Database specific

{
    "cpe": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.0.0-beta.2"
        },
        {
            "fixed": "2.0.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

0.*

0.8.0

0.9.0

0.9.10

0.9.11

0.9.12

0.9.13

0.9.14

0.9.15

0.9.16

0.9.17

0.9.18

0.9.19

0.9.2

0.9.3

0.9.4

0.9.5

0.9.6

0.9.7

0.9.8

0.9.9

1.*

1.1.0-beta.1

1.1.0-beta.2

1.1.0-beta.3

1.1.0-beta.4

1.1.0-beta.5

1.1.0-rc.1

1.1.0-rc.2

1.1.0-rc.3

1.1.9-rc.1

1.1.9-rc.2

1.1.9-rc.3

1.2.0-rc.1

1.2.0-rc.2

1.2.0-rc.3

1.3.0-rc.1

1.3.0-rc.3

1.3.0-rc.4

1.3.0-rc.5

1.5.0-beta.1

1.5.0-beta.2

1.5.0-rc.1

1.6.0-beta.1

1.6.0-beta.2

1.6.0-beta.5

1.6.0-beta.6

1.6.0-beta.7

1.6.0-beta.8

1.6.0-rc.1

1.6.0-rc.2

1.6.0-rc.3

1.6.0-rc.4

1.7.0-beta.1

1.7.0-beta.10

1.7.0-beta.2

1.7.0-beta.3

1.7.0-beta.4

1.7.0-beta.5

1.7.0-beta.6

1.7.0-beta.7

1.7.0-beta.8

1.7.0-beta.9

1.7.0-rc.1

1.7.0-rc.10

1.7.0-rc.12

1.7.0-rc.13

1.7.0-rc.14

1.7.0-rc.15

1.7.0-rc.17

1.7.0-rc.18

1.7.0-rc.19

1.7.0-rc.2

1.7.0-rc.20

1.7.0-rc.3

1.7.0-rc.4

1.7.0-rc.5

1.7.0-rc.6

1.7.0-rc.7

1.7.0-rc.8

1.7.0-rc.9

1.8.0-beta.1

1.8.0-beta.10

1.8.0-beta.11

1.8.0-beta.12

1.8.0-beta.13

1.8.0-beta.14

1.8.0-beta.15

1.8.0-beta.16

1.8.0-beta.17

1.8.0-beta.18

1.8.0-beta.19

1.8.0-beta.2

1.8.0-beta.20

1.8.0-beta.21

1.8.0-beta.22

1.8.0-beta.23

1.8.0-beta.24

1.8.0-beta.25

1.8.0-beta.26

1.8.0-beta.27

1.8.0-beta.28

1.8.0-beta.29

1.8.0-beta.3

1.8.0-beta.4

1.8.0-beta.5

1.8.0-beta.6

1.8.0-beta.7

1.8.0-beta.8

1.8.0-beta.9

2.*

2.0.0-beta.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42608.json"