CVE Explorer
CVE-2026-3241
In Concrete CMS below version 9.4.8, a stored cross-site scripting (XSS) vulnerability exists in the "Legacy Form" block. An authenticated user with permissions to create or edit forms (e.g., a rogue administrator) can inject a persistent JavaScript payload into the options of a multiple-choice question (Checkbox List, Radio Buttons, or Select Box). This payload is then executed in the browser of any user who views the page containing the form. The Concrete CMS security team gave this vulnerabil
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://github.com/concretecms/concretecms","defaultStatus":"unaffected","platforms":["git"],"product":"Concrete CMS","repo":"https://github.com/concretecms/concretecms","vendor":"Concrete CMS","versions":[{"lessThan":"9.4.8","status":"affected","version":"5","versionType":"git"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:efb5e76c13d70f18c8e8eee06d3ea4b9e7d0676fb33c31d335dc1243f8a6db9c · sha256:7d7a30f4ae584315… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":4.8,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpa…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:efb5e76c13d70f18c8e8eee06d3ea4b9e7d0676fb33c31d335dc1243f8a6db9c · sha256:7d7a30f4ae584315… · /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 (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:efb5e76c13d70f18c8e8eee06d3ea4b9e7d0676fb33c31d335dc1243f8a6db9c · sha256:7d7a30f4ae584315… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"url":"https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:efb5e76c13d70f18c8e8eee06d3ea4b9e7d0676fb33c31d335dc1243f8a6db9c · sha256:7d7a30f4ae584315… · /containers/cna/references/1
{"url":"https://github.com/concretecms/concretecms/pull/12826"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:efb5e76c13d70f18c8e8eee06d3ea4b9e7d0676fb33c31d335dc1243f8a6db9c · sha256:7d7a30f4ae584315… · /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.