CVE Explorer

CVE-2026-28405

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bb19907887ac2eb5fc3336db316719bde03a8f6f64d3edcd624aa40a42ff2e85

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"Markus","vendor":"MarkUsProject","versions":[{"status":"affected","version":"< 2.9.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7eedaeb7f777495794426f310d275695a1ab9dc4c3de7d9fa4323aa5367b0ae5 · sha256:aabbf8c5356e4f06… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7eedaeb7f777495794426f310d275695a1ab9dc4c3de7d9fa4323aa5367b0ae5 · sha256:aabbf8c5356e4f06… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7eedaeb7f777495794426f310d275695a1ab9dc4c3de7d9fa4323aa5367b0ae5 · sha256:aabbf8c5356e4f06… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/MarkUsProject/Markus/commit/55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036","tags":["x_refsource_MISC"],"url":"https://github.com/MarkUsProject/Markus/commit/55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7eedaeb7f777495794426f310d275695a1ab9dc4c3de7d9fa4323aa5367b0ae5 · sha256:aabbf8c5356e4f06… · /containers/cna/references/1

{"name":"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1","tags":["x_refsource_MISC"],"url":"https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7eedaeb7f777495794426f310d275695a1ab9dc4c3de7d9fa4323aa5367b0ae5 · sha256:aabbf8c5356e4f06… · /containers/cna/references/2

{"name":"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-p5pc-pxrj-3893","tags":["x_refsource_CONFIRM"],"url":"https://github.com/MarkUsProject/Markus/security/advisories/GHSA-p5pc-pxrj-3893"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7eedaeb7f777495794426f310d275695a1ab9dc4c3de7d9fa4323aa5367b0ae5 · sha256:aabbf8c5356e4f06… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer