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CVE-2026-40596

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability (CSP bypass, see GHSA-9c3j-xm6v-j7j3), the attacker could achieve account takeover. This issue has been fixed in version 2.28.2.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4b068476b226c69245ebc49ce8f8ad720d3509e71032af6cd6cd581de5a3cbe1
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"mantisbt","vendor":"mantisbt","versions":[{"status":"affected","version":">= 2.11.0, < 2.28.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.2,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:L","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/metrics/0/cvssV4_0

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:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d","tags":["x_refsource_MISC"],"url":"https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/references/2
{"name":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3","tags":["x_refsource_MISC"],"url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/references/1
{"name":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/references/0
{"name":"https://mantisbt.org/bugs/view.php?id=37011","tags":["x_refsource_MISC"],"url":"https://mantisbt.org/bugs/view.php?id=37011"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/references/3
{"name":"https://mantisbt.org/bugs/view.php?id=37016","tags":["x_refsource_MISC"],"url":"https://mantisbt.org/bugs/view.php?id=37016"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5aa797c2cc08dc465ac4a9c622fc0350e1bd4a4c3f5ce7a90746fd80ffa955db · sha256:33210c7bdad82306… · /containers/cna/references/4

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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