CVE-2026-28405

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Source
https://cve.org/CVERecord?id=CVE-2026-28405
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28405.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-28405
Aliases
  • GHSA-p5pc-pxrj-3893
Published
2026-03-05T20:06:13.433Z
Modified
2026-04-10T05:41:06.339441Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
MarkUs: Stored XSS in Submission HTML Preview Enables Instructor-Context Actions
Details

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content route reads the contents of a student-submitted file and renders them without sanitization. This issue has been patched in version 2.9.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28405.json"
}
References

Affected packages

Git / github.com/markusproject/markus

Affected ranges

Type
GIT
Repo
https://github.com/markusproject/markus
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036

Affected versions

0.*
0.10.0
1.*
1.8.0-rc1
v1.*
v1.10.0
v1.10.0-rc
v1.10.1
v1.10.1-rc
v1.10.2
v1.10.3
v1.10.4
v1.11.0
v1.11.1
v1.11.2
v1.11.3
v1.11.4
v1.11.5
v1.12.0
v1.12.1
v1.12.2
v1.12.3
v1.12.4
v1.12.5
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.14.0
v1.8.0
v1.8.0-rc2
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v2.*
v2.0.0
v2.0.1
v2.0.10
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.3.4
v2.4.0
v2.4.1
v2.4.10
v2.4.11
v2.4.12
v2.4.2
v2.4.3
v2.4.4
v2.4.5
v2.4.6
v2.4.7
v2.4.8
v2.4.9
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.6.0
v2.6.1
v2.7.0
v2.7.1
v2.8.0
v2.8.1
v2.8.2
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28405.json"