Symfony vulnerabilities: known CVEs & security history
Symfony · Web / Runtime · 28 tracked CVEs · 0 actively exploited · updated July 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Symfony release lines — 28 in total. A CVE here doesn't mean your version is affected — check Symfony's current status and the safe version to run.
Known Symfony CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2026-47767 | critical | 9.8 | 0% | 2026 |
| CVE-2026-45069 | critical | 9.1 | 0% | 2026 |
| CVE-2026-45063 | critical | 9.1 | 0% | 2026 |
| CVE-2026-48736 | high | 8.6 | 0% | 2026 |
| CVE-2026-45077 | high | 8.6 | 1% | 2026 |
| CVE-2026-45075 | high | 8.2 | 0% | 2026 |
| CVE-2026-45074 | high | 8.1 | 0% | 2026 |
| CVE-2026-48489 | high | 7.5 | 0% | 2026 |
| CVE-2026-45071 | high | 7.5 | 0% | 2026 |
| CVE-2026-45068 | high | 7.5 | 0% | 2026 |
| CVE-2026-45305 | high | 7.5 | 1% | 2026 |
| CVE-2026-45304 | high | 7.5 | 1% | 2026 |
| CVE-2026-45133 | high | 7.5 | 1% | 2026 |
| CVE-2026-45756 | high | 7.5 | 1% | 2026 |
| CVE-2026-45073 | high | 7.3 | 1% | 2026 |
| CVE-2026-45070 | medium | 6.5 | 0% | 2026 |
| CVE-2026-48784 | medium | 6.1 | 0% | 2026 |
| CVE-2026-48761 | medium | 6.1 | 0% | 2026 |
| CVE-2026-48760 | medium | 6.1 | 0% | 2026 |
| CVE-2026-45753 | medium | 6.1 | 0% | 2026 |
| CVE-2026-45064 | medium | 6.1 | 0% | 2026 |
| CVE-2026-45066 | medium | 6.1 | 0% | 2026 |
| CVE-2026-45065 | medium | 6.1 | 0% | 2026 |
| CVE-2026-45072 | medium | 5.4 | 0% | 2026 |
| CVE-2026-48747 | medium | 5.3 | 0% | 2026 |
| CVE-2026-47212 | medium | 5.3 | 0% | 2026 |
| CVE-2026-45755 | medium | 5.3 | 0% | 2026 |
| CVE-2026-45754 | medium | 5.3 | 0% | 2026 |
Is my Symfony version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Symfony version → · Monitor Symfony for new CVEs →
Symfony vulnerabilities — frequently asked
How many known vulnerabilities does Symfony have?
IsItPatched tracks 28 CVEs for Symfony. 3 are critical-severity and 12 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Symfony have any actively-exploited vulnerabilities?
None of Symfony's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe Symfony vulnerability?
Among tracked issues, CVE-2026-47767 (CRITICAL, CVSS 9.8) ranks highest — a CWE-436 weakness.
Is Symfony safe to use?
It depends on the version. The latest supported Symfony release (8.1.1) clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Symfony security status · Symfony end-of-life · actively-exploited CVEs. Always verify against Symfony's advisories — see our disclaimer.