Widely-used DB admin tool; critical XSS via server-provided text; could affect many orgs.
CVE-2026-12048
Stored XSS in pgAdmin 4 UI via attacker-controlled text.
Is CVE-2026-12048 being exploited?
Not confirmed. CVE-2026-12048 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 0.27% probability of exploitation in the next 30 days.
How severe is CVE-2026-12048?
CVE-2026-12048 is rated Critical with a CVSS score of 9.3. 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-2026-12048?
Yes. A fix has been recorded for CVE-2026-12048. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-12048 affect?
CVE-2026-12048 affects pgAdmin 4 (6.0 - 9.15). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-12048?
Upgrade to pgAdmin 4 9.16+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker-controlled server can inject HTML/iframe into pgAdmin UI, enabling phishing and top-level redirects.
Patch when possible
- affected>= 6.0 and < 9.16
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.