GHSA-p68c-rmfh-j48h

Source

https://github.com/advisories/GHSA-p68c-rmfh-j48h

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-p68c-rmfh-j48h/GHSA-p68c-rmfh-j48h.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-p68c-rmfh-j48h

Aliases

CVE-2026-30662

Published

2026-03-24T15:30:29Z

Modified

2026-03-26T18:56:22Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

ConcreteCMS is vulnerable to Denial of Service During Bulk Downloads

Details

ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager component. The 'download' method in 'concrete/controllers/backend/file.php' improperly manages memory when creating zip archives. It uses 'ZipArchive::addFromString' combined with 'file_get_contents', which loads the entire content of every selected file into PHP memory. An authenticated attacker can exploit this by requesting a bulk download of large files, triggering an Out-Of-Memory (OOM) condition that causes the PHP-FPM process to terminate (SIGSEGV) and the web server to return a 500 error.

Database specific

{
    "cwe_ids":  [
        "CWE-770"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-03-26T18:38:46Z",
    "nvd_published_at":  "2026-03-24T15:16:34Z",
    "severity":  "MODERATE"
}

References

Affected packages

Packagist / concrete5/concrete5

Package

Name: concrete5/concrete5
Purl: pkg:composer/concrete5/concrete5

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Last Affected

9.4.7

Affected versions

8.*

8.0

8.0.1

8.0.2

8.0.3

8.1.0

8.2.0RC2

8.2.0

8.2.1

8.3.0

8.3.1

8.3.2

8.4.0RC3

8.4.0RC4

8.4.0

8.4.1

8.4.2

8.4.3

8.4.4

8.4.5

8.5.0RC1

8.5.0RC2

8.5.0

8.5.1

8.5.2

8.5.3

8.5.4

8.5.5

8.5.6RC1

8.5.6

8.5.7

8.5.8

8.5.9

8.5.10

8.5.11

8.5.12

8.5.13

8.5.14

8.5.15

8.5.16

8.5.17

8.5.18

8.5.19

8.5.20

8.5.21

9.*

9.0.0RC1

9.0.0RC3

9.0.0RC4

9.0.0

9.0.1

9.0.2

9.1.0

9.1.1

9.1.2

9.1.3

9.2.0RC2

9.2.0

9.2.1

9.2.2

9.2.3

9.2.4

9.2.5

9.2.6

9.2.7

9.2.8

9.2.9

9.3.0

9.3.1

9.3.2

9.3.3

9.3.4

9.3.5

9.3.6

9.3.7

9.3.8

9.3.9

9.4.0RC1

9.4.0RC2

9.4.0

9.4.1

9.4.2

9.4.3

9.4.4

9.4.5

9.4.6

9.4.7

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-p68c-rmfh-j48h/GHSA-p68c-rmfh-j48h.json"