Silverstripe 6.3 · Version Status
Silverstripe 6.3 End of Life Date
Silverstripe 6.3 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
✓
Silverstripe 6.3 is actively supported. EOL date: October 31, 2027.
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EOL Date
Oct 31, 2027
364 days remaining
Latest Release
6.3.0
Standard release
Release Date
Oct 28, 2026
Silverstripe 6.3 series
Where these dates come from
End of lifeOct 31, 2027endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees End of active supportApr 30, 2027endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees ReleaseOct 28, 2026endoflife.date (open dataset) · endoflife.datemedium · 1 source agrees Confidence: high = two or more independent sources agree (the vendor's page read by our adapter, a person's check against the vendor, the dataset the date came from); medium = one; low = the vendor page disagrees or our last read is stale.
How we source dates.
Lifecycle detail
Silverstripe 6.3 was released on October 28, 2026 and support is scheduled to end on October 31, 2027 — a planned supported lifespan of 1 year, in line with the 1 year median for Silverstripe releases. Its most recent patch is 6.3.0, published October 28, 2026.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
All Silverstripe Versions
| Version | Latest | EOL Date | Status |
|---|
| 2.3 |
2.3.13 |
Supported |
EOL |
| 2.4 |
2.4.13 |
Mar 31, 2015 |
EOL |
| 3.0 |
3.0.14 |
Oct 12, 2015 |
EOL |
| 3.1 |
3.1.21 |
Dec 31, 2016 |
EOL |
| 3.7 |
3.7.5 |
Sep 30, 2021 |
EOL |
| 4.10 |
4.10.0 |
Dec 31, 2022 |
EOL |
| 4.11 |
4.11.2 |
May 19, 2023 |
EOL |
| 4.12 |
4.12.1 |
Oct 26, 2023 |
EOL |
What does Silverstripe 6.3 end of life mean?
When Silverstripe 6.3 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Silverstripe 6.3 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Silverstripe 6.3 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Silverstripe 6.3 reach end of life?
Silverstripe 6.3 reaches end of life on October 31, 2027. That is 364 days remaining.
Is Silverstripe 6.3 still supported?
Yes, Silverstripe 6.3 is currently supported. The EOL date is October 31, 2027.
What should I upgrade to from Silverstripe 6.3?
The recommended upgrade from Silverstripe 6.3 is
Silverstripe 6.3 — the latest actively supported version. Check the
Silverstripe full timeline for all supported versions.
What are the security risks of running Silverstripe 6.3 past EOL?
When Silverstripe 6.3 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no vendor fix. A CVE-based scan does not show this — it is the CVE blind spot; some scanners flag unsupported versions of common products, but coverage varies and none give the date in advance. Organizations running EOL Silverstripe should migrate immediately or implement compensating controls.