CVE Explorer

CVE-2026-39960

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and below contain flawed logic that causes improper escaping of a textarea custom field's contents in the Update Issue page, (bug_update_page.php) allowing an attacker to inject HTML and, if CSP settings permit, execute arbitrary JavaScript when the page is loaded. This facilitates session theft, leading to admin account takeover, full project data access. In order to exploit this issue, a textarea-type custom field m

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:aa898e6fe6208a64928b6485163a41a5d16fb23792d2a8b6f39a04f05c17767a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"mantisbt","vendor":"mantisbt","versions":[{"status":"affected","version":"< 2.28.2"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:2625179025848881689f571e3cd86a81d0bab218b3be94d1ad21a67db364310a · sha256:01fb9f5548fa0d70… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:2625179025848881689f571e3cd86a81d0bab218b3be94d1ad21a67db364310a · sha256:01fb9f5548fa0d70… · /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:v2:2625179025848881689f571e3cd86a81d0bab218b3be94d1ad21a67db364310a · sha256:01fb9f5548fa0d70… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/mantisbt/mantisbt/commit/5fec0f448b7a7d7d539a6adb6dccceac4e4e4ab7","tags":["x_refsource_MISC"],"url":"https://github.com/mantisbt/mantisbt/commit/5fec0f448b7a7d7d539a6adb6dccceac4e4e4ab7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2625179025848881689f571e3cd86a81d0bab218b3be94d1ad21a67db364310a · sha256:01fb9f5548fa0d70… · /containers/cna/references/1

{"name":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-qj6w-v29q-4rgx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-qj6w-v29q-4rgx"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:2625179025848881689f571e3cd86a81d0bab218b3be94d1ad21a67db364310a · sha256:01fb9f5548fa0d70… · /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.

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