CVE Explorer

CVE-2026-2736

Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL containing the ‘q’ parameter in ‘/search/index.html’. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cf1eb562121ae0eaf4fc03827393fb079dd10cab3ef3360c31ae5cbb99fab27a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"OpenCms","vendor":"Alkacon","versions":[{"status":"affected","version":"18.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:8403d7874a0ddee4fd7acc0c27e5c73305e28fa2b5316b621d5250f496602ab1 · sha256:d97355dfb1948443… · /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":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:8403d7874a0ddee4fd7acc0c27e5c73305e28fa2b5316b621d5250f496602ab1 · sha256:d97355dfb1948443… · /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_v5cwe
urn:baitaphish:normalized-source-record:v2:8403d7874a0ddee4fd7acc0c27e5c73305e28fa2b5316b621d5250f496602ab1 · sha256:d97355dfb1948443… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"tags":["patch"],"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-alkacons-opencms"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:8403d7874a0ddee4fd7acc0c27e5c73305e28fa2b5316b621d5250f496602ab1 · sha256:d97355dfb1948443… · /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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