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CVE-2026-32308

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.23, the Markdown viewer component renders Mermaid diagrams with securityLevel: "loose" and injects the SVG output via innerHTML. This configuration explicitly allows interactive event bindings in Mermaid diagrams, enabling XSS through Mermaid's click directive which can execute arbitrary JavaScript. Any field that renders markdown (incident descriptions, status page announcements, monitor notes) is vulnerable. Thi
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:edb96a004b02de4881d5bfbdce08182eb9e5e2c4d652d6692124ccb8681048ac
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"oneuptime","vendor":"OneUptime","versions":[{"status":"affected","version":"< 10.0.23"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:860244df1780b99688828e98b3f93f2c5fadca49de9d67cd9486c18aef6f8696 · sha256:3f5d2975eacf49b8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:860244df1780b99688828e98b3f93f2c5fadca49de9d67cd9486c18aef6f8696 · sha256:3f5d2975eacf49b8… · /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:v2:860244df1780b99688828e98b3f93f2c5fadca49de9d67cd9486c18aef6f8696 · sha256:3f5d2975eacf49b8… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/OneUptime/oneuptime/security/advisories/GHSA-wvh5-6vjm-23qh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OneUptime/oneuptime/security/advisories/GHSA-wvh5-6vjm-23qh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:860244df1780b99688828e98b3f93f2c5fadca49de9d67cd9486c18aef6f8696 · sha256:3f5d2975eacf49b8… · /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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