CVE Explorer
CVE-2026-41148
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versions 10.9.5 and prior, in addition to 11.0.0-alpha.1 through 11.12.0 are vulnerable to CSS injection through improper sanitization. The state diagram (and any other diagram type that routes user-controlled style strings through the createCssStyles parser) captures classDef values using an unrestricted regex that matches everything up to a newline. That value then flows unsanitized through
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"mermaid","vendor":"mermaid-js","versions":[{"status":"affected","version":">= 11.0.0-alpha.1, < 11.15.0"},{"status":"affected","version":"< 10.9.6"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/problemTypes/0/descriptions/0
Source references
6 source assertions{"name":"https://github.com/mermaid-js/mermaid/commit/8fead23c59166b7bab6a39eac81acebee2859102","tags":["x_refsource_MISC"],"url":"https://github.com/mermaid-js/mermaid/commit/8fead23c59166b7bab6a39eac81acebee2859102"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/references/1
{"name":"https://github.com/mermaid-js/mermaid/commit/e9b0f34d8d82a6260077764ee45e1d7d90957a0f","tags":["x_refsource_MISC"],"url":"https://github.com/mermaid-js/mermaid/commit/e9b0f34d8d82a6260077764ee45e1d7d90957a0f"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/references/2
{"name":"https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0","tags":["x_refsource_MISC"],"url":"https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/references/3
{"name":"https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6","tags":["x_refsource_MISC"],"url":"https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/references/4
{"name":"https://github.com/mermaid-js/mermaid/security/advisories/GHSA-xcj9-5m2h-648r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mermaid-js/mermaid/security/advisories/GHSA-xcj9-5m2h-648r"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/references/0
{"name":"https://mermaid.js.org/config/schema-docs/config.html#securitylevel","tags":["x_refsource_MISC"],"url":"https://mermaid.js.org/config/schema-docs/config.html#securitylevel"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2f2042b83d49cbeec8c6b93cfd49100787e71f01170e315d22c40c6b9f9f1db1 · sha256:0992454be396fe42… · /containers/cna/references/5
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.