CVE-2026-12228
Stored XSS in lollms message-share endpoint allows remote JS execution.
Is CVE-2026-12228 being exploited?
Not confirmed. CVE-2026-12228 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.22% probability of exploitation in the next 30 days.
How severe is CVE-2026-12228?
CVE-2026-12228 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-12228?
Not known from our data. No patch reference has been recorded for CVE-2026-12228, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-12228 affect?
CVE-2026-12228 affects parisneo/lollms, POST /api/prompts/share endpoint, DBDirectMessage.content, MessageContentRenderer (frontend using v-html). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-12228?
Add server-side sanitization, remove v-html HTML rendering, block HTML in messages, enforce CSP; apply vendor patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can send malicious DM causing arbitrary JS execution, perform actions as victims, exfiltrate same-origin data, and enable account takeover.
Immediate action required
- affected<= latest
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.