CVE Explorer

CVE-2026-1011

A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests. The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bcd03787d07971094952ea675c204a12dc40859ff7599bb60e6f6a4c47e7b9b3

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"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:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-116","description":"CWE-116 Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","modules":["Support case comment rendering (AddComment endpoint)"],"platforms":["Web"],"product":"Altium Live","vendor":"Altium","versions":[{"changes":[{"at":"1.1.1.40","status":"unaffected"}],"lessThanOrEqual":"1.1.1.39","status":"affected","version":"0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"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:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-116","description":"CWE-116 Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /containers/cna/problemTypes/1/descriptions/0

Source references

1 source assertion

{"url":"https://www.altium.com/platform/security-compliance/security-advisories"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:320fcd7585facc4d1a7ad3b442efc8f5b361e38a097beff12cd279b5adb07821 · sha256:9f63b067cbee9fed… · /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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